4-14-00-02536 (Beilstein Handbook Reference) 5H-Dibenzo(a,c)cycloheptene-3-carboxylic acid, 6,7-dihydro-5-(acetylamino)-9,10,11-trimethoxy-, methyl ester, (S)- 641-28-1 Allocolchicin Allocolchicine BRN 2955763