Patent classifications
C
CHEMISTRY; METALLURGY
Load children
C07
ORGANIC CHEMISTRY
Load children
C07D
HETEROCYCLIC COMPOUNDS
Load children
273/00
Heterocyclic compounds containing rings having nitrogen and oxygen atoms as the only ring hetero atoms, not provided for by groups C07D261/00 - C07D271/00
Load children Filter patents View analytics View as hierarchy
C07D273/08
having two nitrogen atoms and more than one oxygen atom
Filter patents View analytics View as hierarchy