酞嗪又称苯并-正二嗪或苯并哒嗪，是一种分子式为C8H6N2的杂环有机化合物。它与其他萘啶类异构体，包括喹喔啉、辛可林和喹唑啉等。
1,4-Dihydrazinylphthalazine sulfate
1,4-Dichlorophthalazine-6-carbonitrile
6-Bromophthalazine
1-Chloro-4-methylphthalazine
6-Chlorophthalazin-1-ol
1,4-Dibromophthalazine
4-(4-Chlorobenzyl)-2-(1-methylazepan-4-yl)phthalazin-1(2H)-one hydrochloride
tert-Butyl 4-(2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoyl)piperazine-1-carboxylate
5-Nitro-2,3-dihydrophthalazine-1,4-dione
4-Oxo-3,4-dihydrophthalazine-1-carboxylic acid
6-Bromo-1-chlorophthalazine
Ethyl 2-(4-oxo-3,4-dihydrophthalazin-1-yl)acetate
N-(4-Chlorophenyl)-4-(pyridin-4-ylmethyl)phthalazin-1-amine succinate
4-Phenylphthalazin-1(2H)-one
2-(4-Oxo-3-((5-(trifluoromethyl)benzo[d]thiazol-2-yl)methyl)-3,4-dihydrophthalazin-1-yl)acetic acid
2-Fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzamide
2-(4-Oxo-3,4-dihydrophthalazin-1-yl)acetic acid
8-Chlorophthalazin-1(2H)-one
4-Bromophthalazin-1(2H)-one
4-Methylphthalazin-1(2H)-one
4-(4-Fluoro-3-(piperazine-1-carbonyl)benzyl)phthalazin-1(2H)-one
6-Bromophthalazin-1(2H)-one
1-Chlorophthalazine
2-Fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzonitrile
6-Amino-2,3-dihydrophthalazine-1,4-dione
1,4-Dichloro-6-methylphthalazine
6-Bromophthalazine-1,4-diol
3-((4-Oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoic acid
4-(4-Fluoro-3-(4-methoxypiperidine-1-carbonyl)benzyl)phthalazin-1(2H)-one
5-Nitrophthalazine
