API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Finasteride

EP Impurity A

(5alpha,17beta)-N-(1,1-dimethyl ethyl)-3-oxo-4-aza androstane-17-carboxamide Finasteride-EP-Impurity-A
Finasteride

Finasteride Impurity

(5alpha,17beta)-N-(cyclohexyl)-3-oxo-4-aza-5-androst-1-ene-17-carboxamide Finasteride-Impurity
Finasteride

EP Impurity B

(5alpha,17beta)-Methyl 3-oxo-4-aza-5-androst-1-ene-17-carboxylate Finasteride-EP-Impurity-B
Finasteride

Finasteride Impurity

1,3-Dicyclohexyl urea Finasteride-Impurity-1,3-Dicyclohexyl-urea