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

CAS Number
1008531-60-9(HCl Salt); 1428331-96-7 (hydrate) ; 2389989-55-1 (2HCl salt)
CAS Number
50-81-7(base libre)
Alternate CAS Number
5743-28-2(sel de calcium dihydraté); 134-03-2(sel de sodium)
CAS Number
148-24-3(free base)
Alternate CAS Number
134-31-6(sulfate salt);207386-91-2(hemisulfate hemihydrate salt)