Heterocyclic Amines (HCA)
From WaiWiki
Heterocyclic amines (HCAs) contain at least one heterocyclic ring (containing atoms of at least 2 different elements) and one amine group, attached to the heterocyclic ring. Some HCA are harmless, or even beneficial(eg vitamin B3 and B6) File:Vitamin B3.png , whereas others, created by cooking or burning, may cause cancer.