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
444731-72-0
Alternate CAS Number
635702-60-2(Hcl)
CAS Number
169905-10-6 (base)
Alternate CAS Number
72830-09-2 (sel HCl)
CAS Number
6269-91-6
Alternate CAS Number
126148-19-4 (Na salt)
CAS Number
203395-84-0(freebase)
Alternate CAS Number
2748462-55-5(HCl salt)