BAR 501; (3R,5S,6S,7S,8S,9S,10S,13R,14S,17R)-6-ethyl-17-((R)-5-hydroxypentan-2-yl)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene-3,7-diol; CAS No.: 1632118-69-4; As a worldwide chemical supplier, ChemShuttle supplies steroidal scaffolds for pharmaceutical research. Our CRO chemical synthesis services support complex molecular assembly.