Chemical Compound Sourcing & Procurement Pipeline for identifying, sourcing, and purchasing chemical compounds from commercial vendors. Resolves compound identity through PubChem/ChEMBL, searches multiple vendor databases (ZINC, Enamine, eMolecules, Mcule), compares pricing and availability, and identifies purchasable analogs when exact compounds are unavailable. Guiding principles : 1. Identity first -- confirm the compound's structure (SMILES, InChI) before searching vendors; names can be ambiguous 2. Multi-vendor comparison -- always check multiple sources; pricing and stock vary significa…