October 13, 2021

Check out safer – you are protected by MolPort guarantee

If the products are not delivered or you are not satisfied with quality, we can help fix it. The guarantee applies to products purchased from any seller at MolPort and covers up to USD 2000.

The MolPort Guarantee may protect a buyer purchasing products via the MolPort where the payment for the products is made via MolPort and:

  • the products are not delivered to the buyer (and they will be deemed to be undelivered if they are not received by the buyer within 30 days following the last due date for delivery);
  • the products delivered to the buyer are materially different from the products ordered; or
  • the products delivered to the buyer are not of a satisfactory quality

The MolPort Guarantee will only apply where:

  • the buyer has contacted the seller to request a refund (or other appropriate remedy) within 7 days of the receipt of products (or, where products have not been received, within 7 days of the due date of receipt); and
  • the seller has refused to provide and has not in fact provided a refund (or other appropriate remedy).

MolPort will determine in its sole discretion - but considering any information and evidence submitted by or on behalf of the buyer and the seller - whether products delivered are "materially different from products ordered" and whether products delivered are of a "satisfactory quality".

Ready to start looking for compounds? Go to molport.com.

For full Terms & Conditions visit MolPort Guarantee link.


October 4, 2021

Compound Sourcing Risks and Solutions

Designing a suitably diverse, yet specifically targeted set of available compounds to explore a new structure-activity relationship or validate a new bioassay is getting easier – with new smart SAR and assay design tools developed in-house or available from open-source sites and commercial software vendors.

So far, so good. But where will you find these compounds and get them delivered, ready to run through your new bank of bioassays? Surely that’s the easy part of the process? Not so fast! The compound sourcing workflow has several linked sequential steps, and each requires attention to keep things moving smoothly. But there can be challenges at each stage, and you may already have encountered some of them, especially when you need to get the samples from several different suppliers. 

The compound sourcing workflow and potential challenges:

Documents, documents

Chances are that each supplier will have their own invoicing system, and each separate shipment will need its own import documents and custom fees – all of which take time to prepare. And don’t expect all the suppliers to deliver on the same date, or even on the date they promise. Outsourcing these administrative overheads to an experienced consolidator can help.

Where is my package? 

Tracking a single shipment from one supplier is easy enough, but what if your sample set is in 20 shipments from 15 suppliers? Tracking all these packages is another wasteful time sink which is best handled by a third party with close links to all the suppliers.

Why is my package late, and why is it damaged?

Late delivery of packages is not uncommon, and sometimes packages are damaged and the contents cross-contaminated. This can interrupt the critical timeline for your SAR or bioassay project. Centralized receipt and processing of the various packages can detect and rectify these issues early to keep your project on track.

Did I get everything I ordered?

Once the packages arrive, they need to be checked carefully to ensure that all the required compounds are present, and often they are not. Sometimes labels are missing key information; sometimes a compound will no longer be available; or some compounds will be delayed to a later shipment. So again, your project is on hold until these discrepancies are solved, and gaps are filled. Checking, relabeling, and quickly offering suitable replacement compounds are all available from a trusted sourcing supplier like MolPort.

What am I supposed to do with all these different vials and plates? 

You have received all the compounds, but are dismayed to find that Supplier 1 ships samples in large bottles, Supplier 2 in small vials, and Supplier 3 in plates – but not the format that you need – and all with inconsistent labels. So another project interruption, as you transfer, re-weigh, and re-label all the samples into your preferred bioassay format. 

You may have encountered some or all of these compound sourcing challenges, and wondered if there was a better way that avoided them. The good news is that there is.

Reliable and predictable delivery of exactly the compounds you ordered, on time, and in your specified format is possible, and MolPort offers a comprehensive range of value-added laboratory services (beyond simply searching for compounds and their suppliers) to ensure this, so that you can confidently plan and execute your research projects on time and within budget.

For more details: Laboratory services for your sourcing

February 16, 2021

List Search Tool – Product Description and Benefits

Go to molport.com.


Searching for suppliers for a few compounds at a time by name or structure is simple enough, even when additional criteria like amount required or purity are important. But what if you need to find suppliers for hundreds or even thousands of compounds – maybe to complete a targetted library for an urgent structure-activity relationship study, or to obtain a structurally diverse set of compounds to run against a new antiviral screen? And as well as matching on structure or substructure, you want specify delivery amounts, purity levels, price, lead times, etc. For projects like these, one-by-one searching is just not practical, and this is where MolPort’s List Search Tool is the solution. All users can use the tool with a basic set of filters to search their lists and create tailored quotes, and registered users can search with larger lists and match their exact sourcing requirements with the full set of powerful filters described below. 

List Search Tool in Action 

If you have a list of compounds (up to 500 compounds for everyone, and up to 10,000 compounds for registered users) you can use the List Search Tool to submit the list to search the MolPort database as single query. Compound lists can be submitted as SDfiles, or as SMILES or MolPort IDs in a text file or copied from Microsoft Excel. Everyone can add basic filters to the list search, such as amount required and structure match type.  You can also include internal reference numbers or compound IDs at any point in the process to facilitate seamless integration of quotes or purchase orders with your own internal sourcing and ordering processes. 

Once the hit list is returned, registered users can apply an extensive set of additional filters to help refine their hit lists to best match their specific purchasing, budget,  and delivery requirements, without needing to re-run the search. Filters include:
  • Pricing options (e.g. maximum price per compound)
  • Quantity ranges (e.g. required amount, acceptable  amount, contingencies) 
  • Purity levels (e.g. required level, acceptable level)
  • Supplier selection (e.g. select preferred suppliers, order from the fewest)
  • Solubility status flag
  • Hazard status flag 
  • Order in micromoles
  • Lead time

All List Searches are retained in a Search History, so you can continue to work on the list without needing to re-run a search. Once a hit list has been filtered to your exact requirements, and the anticipated price and delivery schedules are satisfactory, registered users can generate a quote in PDF or Microsoft Excel format, or they can go direct to the online shopping cart to process the order. 


The List Search Tool saves time and administrative overhead by searching for up to 10,000 compounds in one query, and applying additional parameters to the whole list or individual items, like amount required, lead time, whether compounds are soluble or hazardous, and selecting/deselecting suppliers. As well as saving time, the List Search Tool helps researchers get the optimum price and delivery schedule, so they can maximize research budgets and plan research projects for maximum efficiency.

  • Flexible input file allows compound lists to be submitted in commonly used formats including SDfiles, and SMILES or MolPort IDs in text files or copied/pasted from Microsoft Excel, saving data pre-processing time: and inclusion of internal compound IDs can simplify integration with internal logistics processes.
  • Quantity selection provides more than a simple yes/no option, and researchers can specify alternatives in the same search, with no need to re-run.
  • Supplier match offers options to pick preferred suppliers, get the shortest shipment list, use the most reliable supplier tier system, and achieve the lowest prices. 
  • Budget optimization is possible by setting a maximum price per compound, reviewing nearness to a supplier volume discount, and reviewing the most expensive products, with price transparency (including shipping and handling) and no hidden costs.
  • Chemical specification of structure match type (perfect, exact, racemate, any), required purity, and solubility can all contribute to enhancing research quality.
  • Logistics issues can be avoided by using the hazard flag and substituting difficult-to-ship compounds with non-hazardous alternatives.
  • Stock solution preparation can be speeded up by ordering compounds in micromole amounts, and avoiding having to convert milligrams/micrograms to micromoles to achieve the required molarity.
  • Scheduling of sample delivery is facilitated by specifying a required lead time to ensure maximum project efficiency.  
  • Planning and returning to results via the Search History saves time: scientists can return at any time to see previous searches and refine and edit a list without having to start from the beginning.
  • Multiple output file formats are available to support different business practices: Microsoft Excel quotes facilitate further list revision or additional calculations;  PDF quotes are available to pass directly to the purchasing department for PO processing; and there is an option to place the order direct with MolPort. 

Access types


The List Search Tool saves time and administrative overhead by searching for up to 10,000 compounds in one query with additional parameters, so that researchers can achieve the optimum price and delivery schedule, maximize their research budgets, and plan their research projects for maximum efficiency.

To try the List Search Tool now, please <click here>.
To see a short video of the List Search tool in action, please <click here>.
To request a beginner-level webinar recording and get more practical information, please <click here>

November 10, 2020

New MolPort API Calls Help Track Your Orders

Authorized customers are already taking advantage of the MolPort API to programmatically access information from the MolPort database about commercially available compounds, their suppliers, packaging, prices, warehouse inventory information, lead times, and other information. 

MolPort is now pleased to announce the addition of two new MolPort API calls to help customers track their compound orders:

1. List Orders

This API call returns all orders for a specific client, and lists them in descending date order (newest-to-oldest). 
Users submit a GET call to api.molport.com/api/orders with the client’s MolPort-provided API key, and the API returns:

Count of ordered compounds 
Count of cancelled compounds
Count of compounds already shipped
Count of compounds being processed
MolPort order number
Order date
Order status
Order unique id 

2. Return One Specific Order

This API call returns all the details of a single specified order.

Users submit a GET call to api.molport.com/api/order/[id] with the client’s MolPort-provided API key, and the API returns:

Order details

Count of ordered compounds
Count of cancelled compounds
Count of compounds already shipped
Count of compounds being processed
MolPort order number
Order date
Order status
Order unique id 

Compound details

Supplier name
Supplier catalogue number
MolPort catalogue number
MolPort reference number
Quantity measure
Invoice number
Promised shipped out date*
Shipped out date

* This value is a subject for change, due to several external reasons, to get reliable & up-to-date information, please make sure to refresh/ make new API call. 

These new API calls are available now and can help you track your orders automatically, by integrating within your system.

Technical details are available in Section 3.3 of the MolPort API documentation, and if you are interested in using the MolPort API, please contact sales@molport.com.

November 9, 2020

MolPort 2020 Christmas & New Year's Holiday Schedule

MolPort offices will be closed on December 24th, 25th and 26th for Christmas, as well as December 31st and January 1st for New Year's Day.

Please note: Holiday schedules vary by supplier. Please, review these shipment cutoffs for our major suppliers.

September 16, 2020

Is a Compound Worth its Weight in Gold?

What’s the most expensive available, elemental material that you can buy? No, it’s not gold: as of September 7, gold was trading at $62.32 per gram, but lutetium costs $100 per gram, and californium (which has to be made) costs $27M per gram.

What about synthetic organic compounds? Surely, they can’t cost so much, can they? Well actually …. yes, they can. A quick search in MolPort’s comprehensive 7M+ database of available screening compounds and building blocks shows that the most expensive compound on file sells for $3995 per milligram, 64,104 times more expensive than gold on a weight-for-weight basis! Here it is:

Molecular formula: C17H14O7; Molecular weight: 330.292
SMILES: COc1cc2OC3OCCC3(O)c2c2oc(=O)c3C(=O)CCc3c12

Could this be a promising lead? Based on its structural properties, it certainly passes the Pfizer Rule of Five for drug likeness, and a quick search for its InChIKey in PubChem and ChemSpider would show whether it had appeared in any publications. So perhaps it is worth including it in a screening library. 
But can a molecule like this really be worth so much? Maybe. Suppose that it is a key structure needed to complete a crucial structure-activity relationship study that will determine whether a new drug project will continue or be stopped. If the compound is not readily available, the project could be held up while chemists work out how to make it. 

Suppose they work out a synthesis scheme with five steps, each taking a week to complete. That already puts the project back by over a month. And if a single chemist works on the synthesis, even at 50% of their time, that’s 100 hours of work or a cost of $9375 (based on $180K per annum for a fully loaded FTE). 

So maybe that $3995 doesn’t look so bad after all: the project can move ahead quickly, the chemists are freed up to work on other more worthwhile compounds, and the company has saved some $$. 

See what else is on Top 20 list:

May 25, 2020

Useful updates- MolPort web tools

Searching in the MolPort database is often the first thing a scientist or researcher does when they want to find available compounds and suppliers. Searchers need quick, simple and intuitive access; they expect to search intelligently by name, structure/substructure/similarity (drawn, SMILES/SMARTS, file) and to filter by building blocks/screening compounds; and they want to understand, explore, and use the hits they get back. 
Because searching is such an important activity, MolPort is continually working to enhance the feature. This ensures that customers can have the fastest and most intuitive experience, and can make quick and immediate use of the search results to refine a hit list or place an order. 
Customer feedback is crucial in improving MolPort.com features and many of our most useful enhancements have come from customer suggestions of tweaks and changes that will make them more efficient and successful. 

We are therefore pleased to announce some valuable customer-suggested changes that will improve compound selection and usability:
1. Molecule Search Results
2. List Search 

1. Changes to Molecule Search Results

After you have run a compound search (via text, (sub)structure, SMILES/SMARTS or file), the hits are displayed in either a list view or a grid view, with a toggle to switch the view:
List and Grid View Toggle
List view
Grid view

In both these views, you can select and deselect compounds, and you can filter on in-stock and made-to-order compounds. You can also save all compounds or your selection to an SDfile.
Previously, you could not transfer hit from the List View direct to List Search. If you wanted to transfer all the compounds or your selection to List Search so that you could generate a quote, use more advanced filters, and place your order, this was only possible by downloading all the results and making the selection and transfer locally on your PC. Customers told us that this was inconvenient and time-consuming, and asked for a fix. 

NEW! Now you can transfer your selected compounds to List Search with one click on “Transfer selected to List Search” and immediately use List Search to make a final selection, estimate price with optimal for the whole list supplier selection, and create a quotation.

2. Changes to List Search

In the previous List Search user interface, customers reported some confusion in the structure display boxes: were they looking at the hit structure (the result of the search), or the query structure (what was searched for)? 
List Search Results Display: was not visible what structure was searched for?
 NEW! To remove this confusion, we have added a “Show Structure Images” checkbox that now displays an image of each searched structure:
Show Structure Images unchecked (Default setting) 
Show Structure Images checked
In addition, if you click on the “Edit” button in the “Status” column, you will see compound images for the relevant suppliers’ catalogs:
Click Edit to see Supplier Catalog Display
NEW: Customers also requested the ability to display and sort on molecular weight in the List Search Results display, and this now appears as a sortable column on the right.

Go to molport.com

If you have further questions, please don't hesitate to ask help to our Customer Support team on sales@molport.com or by filling this web form.

May 5, 2020

MolPort Real-time Order Tracking and Documentation

With the MolPort order tracking system, customers can see where their order is at any point in time - from when an order is placed until it is delivered. Keep up to date with your order!

If you have used MolPort order tracking before, please see the changes for registered/non-registered access and report sections 3 and 5.

The order tracking service is available to everyone who places an order with us.

Registered users at molport.com have access to their complete order, including order packing data download, product list and information about invoices. If a customer is not registered, this can be easily done using this free Registration link.

Non-registered users can access their current order only. They can see an overview of the order: number of items, status, latest delivery date and shipment summary.

Preview of non-registered user access:

Preview of registered user access:

Report sections:

No.1 Order tracking

Overview of order: number of items, status, latest delivery date and shipment summary. A download link to a spreadsheet with the detailed status for all ordered products is also available.

No.2 Order status

As order transitions from one phase to the next, completed order process stages are marked green. Order may transition through following stages (actual order stages vary by order):

Order received
order has been received, registered and processed by MolPort
Compounds processing
compounds are being processed by suppliers (QC, packaging, shipment preparation)
package has been prepared and is waiting for the shipment
In transit
compounds are in transit from supplier to MolPort warehouse
In MolPort Warehouse
compounds have been received at MolPort warehouse and are waiting for the shipment or additional services
compounds have been received at MolPort warehouse and are being re-formatted in customer’s preferred format – re-weighing, sample splitting, DMSO solutions
compounds are shipped out to customer address
number of ordered compounds that cannot be delivered and have been cancelled from the order

No.3 Invoices

An overview of the order invoice details, including the Billing and Shipping addresses and contact person. Prior to order shipment, there is an estimated invoice value. After the order is shipped, the actual invoice number, issue date and value will be visible.

No.4 Shipment summary

A shipment summary becomes available after a package is sent out to customer address. This includes:
  • Shipping courier name;
  • Shipment type (direct shipments from suppliers or single shipment from MolPort warehouse);
  • Tracking number (including a link to real time tracking at the courier’s website);
  • Packing list (packing data as Excel and SDF files).

No.5 Detailed delivery progress

The delivery progress report section lists the status of each ordered product. You can filter the product list by:
Supplier name
Status (In transit, Shipped, Cancelled, Processing, in MolPort warehouse)
Ordered amount
Expected and actual ship date
Invoice number and courier tracking number

We are able to follow and provide insight into the status of the order through its entire journey to the customer.

March 24, 2020

MolPort is here to help

As MolPort is based in Riga, we’re happy to report that the Latvian authorities took correct, early, proactive measures (before many European and other countries) and the corona virus situation seems to be under control so far – though we are all watching to see how things may develop. 

At MolPort we are working 100% as usual. As well as following all public recommendations, we’re taking special preventative measures for our employees: and we’re monitoring the activities, performance, and individual circumstances at all our suppliers, in order to anticipate any potential changes in your orders. 

We are committed to our employees’ safety and well-being, while at the same time running the business in a responsible manner with all our functions and services working normally. We hope that the circumstances will eventually improve for everybody around the world.

MolPort Services- last update 26.08.2020 and is valid until further notice

We understand customers’ requirements to minimize disruption to your research programs, and we are available to offer whatever help you need for regular orders, library design data, consulting, sample sourcing, ordering, reformatting, and logistics. 
We are working as normal with all orders and inquiries.

  • Our Customer Support and Key Account Manager teams are fully available during office hours, as responsive as always.
  • The Laboratory is running ongoing daily reformatting operations.
  • Logistics: There are no limitations in shipping service. 
Using consolidated delivery from MolPort instead of receiving many packages from different suppliers might be of particular value now, as some companies are restricting parcel delivery to a maximum per day.

  • Suppliers
GreenSupplier is working as usual
Light greenSupplier is working, some minor delays are possible
RedSupplier is closed

SupplierColor codeNotes
A2B Chem LLC
AK Scientific, Inc.
AKL Research LLP
Alinda Chemical
Trading Company
AnalytiCon Discovery, GmbH
Angene (China)
Apexmol technology Co.,Ltd
Apollo Scientific
Axon Medchem
BIONET - Key Organics Ltd.
BIOTREND Chemicals, AG
BLD Pharmatech Ltd.
Cayman Europe
Certumtech, UAB
ChemBridge CorporationOnly ships once a week
ChemDiv, Inc.
Combi-Blocks, Inc.
Debye Scientific
Dr. Silviu Pharmachem
EDASA Scientific
ENAMINE Ltd.Short delays with shipping are possible
EvoBlocks, Ltd.
FCH Group (made-to-order)
Fluorochem Limited
HTS Biochemie Innovationen
InterBioScreen Doo.Short delays with shipping are possible
IRIS Biotech
Keminntek Laboratories
LeadGen Labs
Life Chemicals Inc.
Manchester Organics
Maybridge, Ltd.
MedChemExpress EuropeShort delays with shipping are possible
MolPort, Ltd.
Otava, Ltd.
PBMR Labs Ukraine (made-to-order)
Pharmeks, Ltd.Short delays with shipping are possible
Pure Chemistry Scientific
Ramidus AB
Selleck Chemicals LLC
Squarix GmbH
SynChem, Inc.
Tocris Bioscience
UkrOrgSynthesis Ltd. (stock)Short delays with shipping are possible
Vitas-M Laboratory, Ltd.Short delays with shipping are possible
If any of our suppliers faces closure, our extensive coverage should allow us to source any needed compounds from many other suppliers.

Frequently asked questions

1. What happens if at some point I can't receive my package?

If the recipient can't temporarily receive parcels, that's OK: the packages won’t get stuck in limbo. MolPort can store your orders free of charge for a few weeks if there are issues when we are ready to ship your compounds, such as your logistics facility being closed. Once we get your green light, we’ll ship safely to the destination.

2. What happens to my order if some compounds are delayed in a multiple-compound order? Can the delivery be split or sent as a partial delivery? Are there additional costs for splitting?

MolPort will be tracking the fulfillment of your order, and we will contact you promptly if any supplier cannot make a shipment in the expected time frame. If any part of the order is delayed, we will offer a split shipment at no additional delivery cost.

3. If a supplier is closed, will I still see their compounds in search results?

Their compounds still will be visible in our searches: but the lead time will be an estimate, based on when we think they will open.

4. What will happen to my order if national borders are closed?

For now they are not closed for logistics, and if a supplier can’t ship, we can substitute the supplier, if possible. If a supplier can ship, but MolPort can’t, we would organize drop-shipping. If a supplier can ship but the client can’t receive the shipment, we can hold it in our warehouse. 

5. How should I purchase compounds, in order to receive them in the fastest possible time?

Check the most recent lead time for the supplier. We will update supplier lead times based on the latest information that we receive from them. And read our Blog update for specific supplier details and information.

6. What will happen to my order if I order from a specific supplier, and they can’t ship?

We can switch the suppliers, if the customer is willing to accept any price differences, and if the compound(s) are actually available at different suppliers.

7. What are MolPort doing to stay open and continue operations?  What precautions are MolPort taking and how?

We are following all government and World Health Organization guidelines. 

!!! Please add your question in the comment area, and we will post the answer in the Blog


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