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

CAS Number
110963-63-8
Alternate CAS Number
1841081-72-8(HCl Salt);NA(HCl Sesquihydrate salt)
CAS Number
1429908-35-9(free base)
Alternate CAS Number
2228086-73-3(HBr Salt)
CAS Number
1293489-71-0(freebase)
Alternate CAS Number
1293342-91-2(HCl Salt); 1293343-91-5(HBr)