Heterocyclic compound is a major class of organic chemical compounds characterized by some or all of the atoms in their molecules are joined in rings containing atleast one atom of an element other than carbon.

CAS Number
215447-89-5(HCl salt)
Alternate CAS Number
131064-75-0(Freebase)
CAS Number
86541-77-7(HCl salt)
Alternate CAS Number
6541-76-6(Freebase)
CAS Number
87691-87-0
Alternate CAS Number
87691-88-1(HCl Salt)