63917-71-5 BENZO(a)HEPTALEN-9(5H)-ONE, 7-ACETAMIDO-6,7-DIHYDRO-10-METHYLAMINO-1,2,3-TRIMETH Benzo(a)heptalen-9(5H)-one, 7-acetamido-6,7-dihydro-10-methylamino-1,2,3-trimethoxy- Methylaminocolchicide Methylcolchaminone N-Methylcolchiceinamide