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Term:
Parent Terms Term With Siblings Child Terms
(4-oxo-3-\{[5-(trifluoromethyl)-1,3-benzothiazol-2-yl]methyl\}-3,4-dihydrophthalazin-1-yl)acetic acid  
(R)-6-(4-(4-benzyl-7-chlorophthalazin-1-yl)-2-methylpiperazin-1-yl)nicotinonitrile 
1,2-benzoxazole 
1,3-benzoxazole +  
1,4-benzodiazepine 
1-(1-piperidinyl)-2-[[4-(prop-2-enylamino)-1-phthalazinyl]thio]ethanone 
1-(2,5-dimethyl-1-prop-2-enyl-3-pyrrolyl)-2-(1-phthalazinyloxy)ethanone 
1-benzazepine 
1H-pyrazolo[4,3-d]pyrimidine +   
2,1-benzoxazole 
2-(1,3-benzothiazol-2-yl)-3-(1,4-dioxo-1,2,3,4-tetrahydrophthalazin-6-yl)-5-[(E)-2-phenylethenyl]-2H-tetrazol-3-ium 
2-(1,4-dioxo-3H-phthalazin-2-yl)-N-(5-methyl-4-phenyl-2-thiazolyl)acetamide 
2-(4-chlorophenyl)-1-phthalazinone 
2-(4-methyl-1-oxo-2-phthalazinyl)-N-(4-methylphenyl)acetamide 
2-[3-[(4-bromo-2-fluorophenyl)methyl]-4-oxo-1-phthalazinyl]acetic acid 
2-[[4-(2-chlorophenyl)-5-sulfanylidene-1H-1,2,4-triazol-3-yl]methyl]-1-phthalazinone 
3-(1-phthalazinylhydrazo)-2-indolone 
3-(4-nitrophenyl)-2H-phthalazine-1,4-dione 
3-ethyl-4-oxo-1-phthalazinecarboxylic acid [2-(1H-indol-3-yl)-2-oxoethyl] ester 
3-ethyl-4-oxo-1-phthalazinecarboxylic acid [2-[2-(2,4-dioxo-3-thiazolidinyl)ethylamino]-2-oxoethyl] ester 
3-methyl-4-oxo-1-phthalazinecarboxylic acid [2-(7-ethyl-1H-indol-3-yl)-2-oxoethyl] ester 
4-(6-fluoro-3-methyl-4-oxo-1-benzopyran-2-yl)-2-methyl-1-phthalazinone 
4-[3,4-dihydro-1H-isoquinolin-2-yl(oxo)methyl]-2-methyl-1-phthalazinone 
4-[[4-(1,3-benzodioxol-5-ylmethyl)-1-piperazinyl]-oxomethyl]-2-ethyl-1-phthalazinone 
4-[[4-(benzenesulfonyl)-1-piperazinyl]-oxomethyl]-2-methyl-1-phthalazinone 
4-methyl-2-(2-naphthalenyl)-1-phthalazinone 
4-methyl-2-(8-quinolinyl)-1-phthalazinone 
4-methyl-N-prop-2-enyl-1-phthalazinamine 
4-oxo-3-phenyl-1-phthalazinecarboxylic acid [2-[(1,1-dioxo-3-thiolanyl)amino]-2-oxoethyl] ester 
4-tert-butyl-N-(1,4-dioxo-2,3-dihydrophthalazin-5-yl)benzamide 
4849F 
8-(4-aminophenyl)-5-methyl-N-propyl-5H-[1,3]dioxolo[4,5-g]phthalazine-6-carboxamide 
azelastine +   
benzimidazole +   
benzo[g]pteridine 
benzofuran +   
benzothiophene +   
benzotriazine +   
budralazine 
chromene +   
cinnoline 
diazine +   
dihydralazine  
hydralazine +   
imidazo[1,2-a]pyrazine +  
imidazo[1,2-c]pyrimidine +   
indazole +  
indole +   
indolizine 
isochromene +  
isochromenylium 
isoindole +  
isoquinoline +  
N-(1,3-benzodioxol-5-yl)-4-methyl-1-phthalazinamine 
N-(1-phthalazinylamino)carbamic acid ethyl ester 
N-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-(3-methyl-4-oxo-1-phthalazinyl)acetamide 
N-(2,6-dimethoxyphenyl)-2-(3-methyl-4-oxo-1-phthalazinyl)acetamide 
N-(2-furanylmethyl)-3-(2-methoxyphenyl)-4-oxo-1-phthalazinecarboxamide 
N-(2-oxolanylmethyl)-2-[1-oxo-4-(3-pyridinylmethyl)-2-phthalazinyl]acetamide 
naphthyridine +   
olaparib  
oxagrelate 
oxazolo[4,5-b]pyridine +   
phenanthridine +   
phenazine +  
phthalazin-1(2H)-one 
phthalazine  
An azaarene that is the 2,3-diaza analogue of naphthalene. The parent of the class of phthalazines.
picodralazine 
pteridine 
purine +   
pyridine +   
pyrrolizine +  
quinazoline 
quinoline +   
quinolizine +  
quinolizinium 
quinoxaline +   
talastine 
tetrazole +  
triazine +  
triazines +   
vatalanib +   

Synonyms
Related Synonyms: 2,3-benzodiazine ;   2,3-diazanaphthalene ;   Formula=C8H6N2 ;   InChI=1S/C8H6N2/c1-2-4-8-6-10-9-5-7(8)3-1/h1-6H ;   InChIKey=LFSXCDWNBUNEEM-UHFFFAOYSA-N ;   SMILES=c1ccc2cnncc2c1 ;   benzo[d]pyridazine ;   benzopyridazine ;   beta-phenodiazine
Xrefs: Beilstein:109240 ;   CAS:253-52-1 ;   Gmelin:218064
Xref Mesh: MESH:C043388
Xrefs: PMID:21169055 ;   PMID:21940905 ;   Reaxys:109240 ;   Wikipedia:Phthalazine

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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.