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

CAS Number
23828-92-4
Alternate CAS Number
18683-91-5(Freebase)
CAS Number
107814-37-9
Alternate CAS Number
1384955-66-1(HCl Salt)
CAS Number
2088879-81-4
Alternate CAS Number
2356152-56-0(HCl Salt)
CAS Number
101900-43-0
Alternate CAS Number
101900-44-1(HCl salt)
CAS Number
61-67-6
Alternate CAS Number
148-51-6(HCl Salt)