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

CAS Number
58-40-2
Alternate CAS Number
53-60-1(HCl Salt)
CAS Number
13094-24-1
Alternate CAS Number
72372-62-4(HCl Salt)
CAS Number
50-53-3
Alternate CAS Number
69-09-0(HCl Salt)
CAS Number
82009-34-5
Alternate CAS Number
81129-83-1 (Na salt)
CAS Number
253337-60-9
Alternate CAS Number
2705511-09-5(HCl Salt)
CAS Number
2200269-28-7
Alternate CAS Number
2074615-22-6(Freebase)
CAS Number
226256-56-0
Alternate CAS Number
364782-34-3(HCl Salt)
CAS Number
133210-96-5(Freebase)
Alternate CAS Number
526204-10-4(HCl Salt)
CAS Number
97743-99-2
Alternate CAS Number
62498-67-3(Freebase);1188264-72-3(HBr Salt);97743-99-2(HCl Salt);62498-68-4(oxalate salt)
CAS Number
1329612-81-8;
Alternate CAS Number
1332724-08-9(HBr Salt);64169-45-5(Freebase)
CAS Number
64372-43-6
Alternate CAS Number
479065-02-6(HBr Salt);64169-39-7(Freebase)
CAS Number
NA; 2847776-07-0 (free base) ; 2847776-08-1 (bromide)
CAS Number
96681-85-5
Alternate CAS Number
NA(Sodium - Salt)
CAS Number
110-18-9
Alternate CAS Number
7677-21-6(DiHCl Salt)