(1S,2R,3S,5S,6S,16E,18E,20R,21S)-11-chloro-6,21-dihydroxy-12,20-dimethoxy-2,5,9,16-tetramethyl-4,24-dioxa-9,22-diazatetracyclo[19.3.1.11?,1?.03,?]hexacosa-10,12,14(26),16,18-pentaene-8,23-dione,CAS No.: 13477-53-7 Known for its application in the synthesis of pharmaceutical intermediates, this compound is essential for drug development. Its role in complex syntheses is crucial. ChemShuttle offers detailed synthesis services and supports online procurement with US warehouse shipping.