ClassID:

95005

C07D307/885 - CPC Classification

Classification description:

Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems; Benzo [c] furans; Hydrogenated benzo [c] furans with one oxygen atom directly attached in position 1 or 3 3,3-Diphenylphthalides

Recent Application in this class: