ClassID:

112449

C12P17/187 - CPC Classification

Classification description:

Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin; Heterocyclic compounds containing sulfur atoms as ring hetero atoms in the condensed system containing two or more directly linked sulfur atoms, e.g. epithiopiperazines

Recent Application in this class: