August 25th Characterizing and understanding the formation of cysteine conjugates and other by-products in a random, lysine-linked antibody drug conjugate https://www.tandfonline.com/doi/full/10.1080/19420862.2021.1974150#abstract Abstract This study describes the characterization of conjugation sites for a random, lysine conjugated 2-iminothiolane (2-IT) based antibody-drug-conjugate synthesized from an IgG1 antibody and a duocarmycin analog-based payload-linker. Of the 80 putative lysine sites, 78 were found to be conjugated via tryptic peptide mapping and LC-HRMS. Surprisingly, seven cysteine-linked conjugated peptides were also detected…

Looking to explore Molport’s rich compound data for your research? In this quick tutorial, we walk you through three simple ways to access the Molport Database—whether you prefer a direct download, advanced FTP access, or seamless API integration. Learn which option best fits your needs, how to get started, and where to request access. Watch now to make the most of Molport’s powerful resources. 🎥 Watch the full tutorial here: Molport Database Access Options

Oldest Pharmacy Florence is world-renowned for its rich cultural heritage, home to Renaissance art, grand architecture, and literary giants like Dante Alighieri. Yet, tucked away in this treasure-filled city lies a lesser-known marvel: the oldest functioning pharmacy in the world. The Santa Maria Novella Pharmacy was founded in 1221 by a Dominican monk who began cultivating herbs to create medicinal balms, tinctures, and perfumes for their monastery and local patients. Officially opened to the public…

July 28th Real Way to Target Gram-Negative Pathogens: Discovery of a Novel Helicobacter pylori Antibiotic Class https://pubs.acs.org/doi/abs/10.1021/acs.jmedchem.5c00112 Abstract In an era of escalating antibiotic resistance, there is a pressing need for innovative strategies to develop novel antibiotics. Gram-negative bacteria, characterized by their robust dual-membrane, are intrinsically resistant to a wide range of antibiotics and can readily develop new resistances. Members of this bacterial class comprise numerous pathogenic organisms, including the primary cause of gastric cancer, Helicobacter pylori. In…

June 30th Discovery of Daraxonrasib (RMC-6236), a Potent and Orally Bioavailable RAS(ON) Multi-selective, Noncovalent Tri-complex Inhibitor for the Treatment of Patients with Multiple RAS-Addicted Cancers https://pubs.acs.org/doi/abs/10.1021/acs.jmedchem.4c02314 Abstract Oncogenic RAS mutations are among the most common in human cancers. To target the active, GTP-bound state of RAS(ON) directly, we employed an innovative tri-complex inhibitor (TCI) modality. Formation of a complex with an intracellular chaperone protein CypA, an inhibitor, and a target protein RAS blocks effector binding,…

May 26th Design, Synthesis, and Characterization of GluN2A Negative Allosteric Modulators Suitable for In Vivo Exploration https://pubs.acs.org/doi/abs/10.1021/acs.jmedchem.4c02751 Abstract N-Methyl-d-aspartate receptors are ionotropic glutamate receptors that mediate fast excitatory neurotransmission in the central nervous system. These receptors play essential roles in synaptic plasticity, learning, and memory and are implicated in various neuropathological and psychiatric disorders. Selective modulation of NMDAR subtypes, particularly GluN2A, has proven challenging. The TCN-201 derivatives MPX-004 and MPX-007 are potent and selective for GluN2A receptors, yet their physical properties…

As 2025 approaches, the Molport team is looking back to say Thank You to our valued clients, partners, and all we’ve connected with in 2024! May 2025 be as refreshing as the scent of pine trees and as warm as cinnamon-spiced treats, filled with joy and success!   We look forward to continuing our work with you in 2025! The Molport Team

🎄 Holiday Notice! 🎄 In celebration of Christmas and New Year, Molport offices will be closed on December 24th, 25th, 26th & 31st and on January 1st. 🌟 As December is bustling with activity, our suppliers and couriers are working tirelessly to fulfill orders. To ensure timely delivery, we kindly encourage you to place your orders in advance. 📦 Please take a moment to review the shipment cutoffs for our major suppliers, as holiday schedules…

We are very pleased to introduce you to our new CEO, Diana Zelencova-Gopejenko, Ph.D.   Here, we find out a little bit more about Diana, including her medicinal chemistry expertise and how she plans to use her first-hand experience of the whole drug development cycle to both expand Molport’s current offering and introduce new, tailored MedChem tools to make sourcing diverse chemical compounds from around the world easier and faster.  By enhancing access to chemical compounds…

Given the increased volume of orders in Q4, along with busy suppliers and couriers, we highly recommend placing your orders well in advance to ensure timely delivery and avoid any unexpected delays, such as those that may occur in the purchasing department. Please, include enough time to build and optimize the list of compounds to be ordered, negotiate favorable terms with suppliers, and do the paperwork required by your organization internally. To provide you with…