Definition of phthalazine in English:

phthalazine

noun ˈ(f)θaləziːn

Chemistry

An aromatic heterocyclic base, C₈H₆N₂, whose molecule resembles that of naphthalene with the carbon atoms at positions 2 and 3 replaced by nitrogen; 2,3-benzodiazine, 2,3-diazanaphthalene.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From phthal- + azine, after German Phtalazin.

Definition of phthalazine in US English:

phthalazine

nounˈ(f)θaləziːn

Chemistry

An aromatic heterocyclic base, C₈H₆N₂, whose molecule resembles that of naphthalene with the carbon atoms at positions 2 and 3 replaced by nitrogen; 2,3-benzodiazine, 2,3-diazanaphthalene.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From phthal- + azine, after German Phtalazin.

单词	phthalazine
释义	Definition of phthalazine in English: phthalazine noun ˈ(f)θaləziːn Chemistry An aromatic heterocyclic base, C₈H₆N₂, whose molecule resembles that of naphthalene with the carbon atoms at positions 2 and 3 replaced by nitrogen; 2,3-benzodiazine, 2,3-diazanaphthalene. Origin Late 19th century; earliest use found in Journal of the Chemical Society. From phthal- + azine, after German Phtalazin. Definition of phthalazine in US English: phthalazine nounˈ(f)θaləziːn Chemistry An aromatic heterocyclic base, C₈H₆N₂, whose molecule resembles that of naphthalene with the carbon atoms at positions 2 and 3 replaced by nitrogen; 2,3-benzodiazine, 2,3-diazanaphthalene. Origin Late 19th century; earliest use found in Journal of the Chemical Society. From phthal- + azine, after German Phtalazin.
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