Impurities are undesirable chemical components that remain in the active pharmaceutical ingredient during formulation. Impurities may reduce a product's efficacy.

CAS Number
Captopril STD- 51781-06-7: IMP-F- 63250-36-2
Alternate CAS Number
Captopril STD- 51781-21-6(HCl Salt)
CAS Number
51781-06-7
Alternate CAS Number
51781-21-6(HCl Salt)
CAS Number
839712-12-8
Alternate CAS Number
1083076-69-0 (HCl salt) ; 1082644-13-0 (2HCl salt) ;
CAS Number
51781-06-7
Alternate CAS Number
51781-21-6(HCl Salt)