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

CAS Number
154-21-2
Alternate CAS Number
859-18-7(HCl Salt); 7179-49-9(Monohydrate Salt)
CAS Number
50-49-7
Alternate CAS Number
113-52-0(HCl Salt); 10075-24-8(Pamoate Salt)
CAS Number
221373-18-8
Alternate CAS Number
132539-06-1(Freebase);783334-36-1(HCl Salt)
CAS Number
132539-06-1
Alternate CAS Number
221373-18-8(Embonate Monohydrate Salt);783334-36-1(HCl Salt)