Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup
C12P 17/14

Nitrogen or oxygen as hetero atom and at least one other diverse hetero ring atom in the same ring

Full Title

Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms (C12P13/04 - C12P13/24 take precedence) > Nitrogen or oxygen as hetero atom and at least one other diverse hetero ring atom in the same ring