Metabolites are produced during metabolism by breaking down of food, drugs, chemicals and tissues in the body. 

CAS Number
60-23-1
Alternate CAS Number
156-57-0(HCl Salt);27761-19-9(Bitartrate Salt)
CAS Number
20830-81-3
Alternate CAS Number
23541-50-6(HCl Salt);23541-50-6(Epirubicin Hydrochloride - Impurity D)
CAS Number
65870-52-2
Alternate CAS Number
62673-90-9 (sodium salt)
CAS Number
127-33-3
Alternate CAS Number
64-73-3(HCl Salt)
CAS Number
2831955-36-1(free base)
Alternate CAS Number
2857180-11-9 (HBr salt)