Aldrich Market Select
Build better libraries. Run smarter screens. Access over 11 million searchable compounds from 89 global suppliers — all in one self-service portal designed to streamline your screening compound and building block acquisition.
Simplify screening library design with global compound access
Searching, ordering, and tracking shipments of screening compounds are time-consuming tasks. Aldrich Market Select streamlines your processes so you can focus on discovery — not logistics.
From virtual to real
Turn your in-silico discoveries into tangible chemical libraries for testing. Upload structures and find available compounds instantly.
Customized for your success
Design libraries that perfectly match your therapeutic areas and research goals — from small kits to tens of thousands of individual compounds.
Trusted source, global reach
Access millions of high-quality Sigma-Aldrich chemicals and products from 89 trusted suppliers across the globe.
Beyond the catalog
Explore a wider range of building blocks through our extensive supplier network, with custom formatting, labeling, and packaging to your specifications.
"With access to over 21 million products, 11 million searchable structures, and 89 global suppliers, Aldrich Market Select is the most comprehensive platform for screening compound and building block acquisition — trusted by pharmaceutical and biotech researchers worldwide."Aldrich Market Select
Merck Life Science
Expedite the acquisition of your Customized Library
Including international compliance documentation and shipping logistics, our streamlined process ensures you get exactly what you need, when you need it.
Search
Upload a structure or product list for exact, substructure, or similarity searches on AldrichMarketSelect.com
- File Type: SDF or SMI (SMILES)
- ID Type: SMILES, MFCD Numbers, INCHI, Structure ID, CAS Number
- Pre-search filter options: in-stock MilliporeSigma products, MW, CLogP, and more
Build your screening library in minutes, not weeks
Upload your compound list, search across 11 million structures, and get a quote — all from one streamlined portal. Stop juggling suppliers and start discovering.
Frequently asked questions
Find answers to common questions about Aldrich Market Select, from getting started to ordering and delivery. Need more help? Contact our team.
Still have questions?
Connect with our experts to explore sourcing options, suppliers, and custom quote support to meet your project goals.