French: oxapyrazone (n.f.)Russian: оксапиразон

Approval: ISO
IUPAC PIN: (5-bromo-6-oxo-1-phenyl-1,6-dihydropyridazin-4-yl)oxamic acid
IUPAC name: (5-bromo-1,6-dihydro-6-oxo-1-phenylpyridazin-4-yl)oxamic acid
CAS name: 2-[(5-bromo-1,6-dihydro-6-oxo-1-phenyl-4-pyridazinyl)amino]-2-oxoacetic acid
CAS Reg. No.: 4489-31-0
Formula: C12H8BrN3O4
Activity: herbicides (pyridazinone)
Notes: When this substance is used as an ester or a salt, its identity should be stated, for example oxapyrazon-dimolamine [25316-57-8], oxapyrazon-sodium [25316-56-7].
The name “oxapyrazone” was formerly approved by the British Standards Institution.
The names “oxapyrazon” and “oxapyrazon-sodium” were both formerly approved by ISO, but “oxapyrazon-sodium” was deleted as part of a rationalisation exercise.
Structure: Structural formula of oxapyrazon
Pronunciation: ǒks-a-pǐr-a-zǒn  Guide to British pronunciation
InChI: InChI=1S/C12H8BrN3O4/c13-9-8(15-10(17)12(19)20)6-14-16(11(9)18)7-4-2-1-3-5-7/h1-6H,(H,15,17)(H,19,20)

A data sheet from the Compendium of Pesticide Common Names