2-DEMETHYLCOLCHICINE 7336-36-9 Acetamide, N-(5,6,7,9-tetrahydro-2-hydroxy-1,3,10-trimethoxy-9-oxobenzo[a]heptalen-7-yl)-, (S)- Alkaloid CC 6, from Colchicum cornigerum Colchicine, O(2)-demethyl- NSC180533