97043-04-4 BENZO(a)HEPTALENE-7-CARBAMIC ACID, 5,6,7,9-TETRAHYDRO-10-(METHYLTHIO)-9-OXO-1,2, BRN 5659556 Benzo(a)heptalene-7-carbamic acid, 5,6,7,9-tetrahydro-10-(methylthio)-9-oxo-1,2,3-trimethoxy-, butyl ester N-(Butoxycarbonyl)deacetylthiocolchicine