(S)-N-(5,6,7,9-Tetrahydro-9-oxo-1,2,3,10-tetramethoxybenzo(a)heptalen-7-yl)butyramide 86436-36-4 BRN 5777588 BUTYRAMIDE, N-(5,6,7,9-TETRAHYDRO-9-OXO-1,2,3,10-TETRAMETHOXYBENZO(a)HEPTALEN-7- Butyramide, N-(5,6,7,9-tetrahydro-9-oxo-1,2,3,10-tetramethoxybenzo(a)heptalen-7-yl)-, (S)- N-Butyryldeacetylcolchicine NSC 343493