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
2380-61-2
Alternate CAS Number
15743-04-1(Cl Salt)
CAS Number
7275-24-3
Alternate CAS Number
20166-17-0(Free Base)
CAS Number
610271-56-2
Alternate CAS Number
610271-57-3(Maleate Salt)