Colchicoside, Colchicine EP Impurity D, CAS No. 477-29-2, YI
3-O-Demethylcolchicine, Colchicine EP Impurity E, CAS No. 73
Colchiceine, Colchicine EP Impurity F, CAS No. 477-27-0, YIM
N-Deacetylcolchicine, CAS No. 3476-50-4, YCP2696
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