Term Name:	corrin biosynthetic process
Synonyms:	corrin anabolism, corrin biosynthesis, corrin formation, corrin synthesis
Definition:	The chemical reactions and pathways resulting in the formation of corrin, C19H22N4, the fundamental heterocyclic skeleton of the corrinoids. It consists of four reduced pyrrole rings joined into a macrocyclic ring. Corrin is the core of the vitamin B12 molecule.
Ontology:	GO: Biological Process [GO:0046140]    QuickGO    AmiGO