Patent classifications
C
CHEMISTRY; METALLURGY
Load children
C07
ORGANIC CHEMISTRY
Load children
C07D
HETEROCYCLIC COMPOUNDS
Load children
267/00
Heterocyclic compounds containing rings of more than six members having one nitrogen atom and one oxygen atom as the only ring hetero atoms
Load children Filter patents View analytics View as hierarchy
C07D267/08
having the hetero atoms in positions 1 and 4
Load children Filter patents View analytics View as hierarchy
C07D267/10
not condensed with other rings
Filter patents View analytics View as hierarchy