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。
4-(4-Chlorobenzyl)phthalazin-1(2H)-one
4-Benzylphthalazin-1(2H)-one
Phthalazine
4-Chlorophthalazin-1(2H)-one
1,4-Dioxo-1,2,3,4-tetrahydrophthalazine-6-carboxylic acid
1,4-Dichloro-6,7-difluorophthalazine
N-(3-Chlorophenyl)-4-phenylphthalazin-1-amine
(E)-N-(2-(2-(1-(3-Bromophenyl)ethylidene)hydrazineyl)-2-oxo-1-(4-oxo-3,4-dihydrophthalazin-1-yl)ethyl)benzamide
Phthalazine-1-thiol
1,4-Bis((R)-((1S,2S,4S,5R)-5-ethylquinuclidin-2-yl)(6-methoxyquinolin-4-yl)methoxy)phthalazine
2-(3-Methyl-4-oxo-3,4-dihydrophthalazin-1-yl)acetic acid
5-Aminophthalazine
2,3-Dihydrophthalazine-1,4-dione
(8S,9R)-5-Fluoro-8-(4-fluorophenyl)-9-(1-methyl-1H-1,2,4-triazol-5-yl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one
Ethyl 2-(1-oxophthalazin-2(1H)-yl)acetate
2-Fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoic acid
2-(3-(4-Bromo-2-fluorobenzyl)-4-oxo-3,4-dihydrophthalazin-1-yl)acetic acid
4-(1H-Imidazol-2-yl)phthalazin-1(2H)-one
Phthalazin-1(2H)-one
7-Bromophthalazin-1(2H)-one
6-Hydroxyphthalazin-1(2H)-one
2-Methyl-2,3-dihydrophthalazine-1,4-dione
2-Methylphthalazin-1(2H)-one
5-Fluorophthalazin-1(2H)-one
6-Fluorophthalazin-1(2H)-one
7-Aminophthalazin-1(2H)-one
4-(2,5-Difluorophenyl)-1,2-dihydrophthalazin-1-one
tert-Butyl 4-(4-(2-(3-methyl-4-oxo-3,4-dihydrophthalazin-1-yl)acetamido)benzyl)piperazine-1-carboxylate
4-(3,4-Dimethoxybenzyl)phthalazin-1(2H)-one
