![1H-[1,2,4]Triazolo[1,2-a]pyridazine-5-carboxylic acid,2-(2-chloroethyl)-2,3,5,8-tetrahydro-1,3-dioxo-](/structure/78409-66-2.png)
![1H-[1,2,4]Triazolo[1,2-a]pyridazine-5-carboxylic acid,2-(2-chloroethyl)-2,3,5,8-tetrahydro-1,3-dioxo-](/structure/78409-66-2.png)

![ethyl 3-amino-5-hydroxy-7-methoxy-5H-pyrrolo[2,3-d]pyridazine-2-carboxylate](/structure/50315-66-7.png)
ethyl 3-amino-5-hydroxy-7-methoxy-5H-pyrrolo[2,3-d]pyridazine-2-carboxylate

1(6H)-Pyridazineundecanamide,6-imino-3-methyl-N-(6-phenyl-3-pyridazinyl)-
![1,2,4-Triazolo[4,3-b]pyridazine,3-(1H-benzimidazol-5-yl)-6-(hexahydro-1H-azepin-1-yl)-](/structure/596824-66-7.png)
1,2,4-Triazolo[4,3-b]pyridazine,3-(1H-benzimidazol-5-yl)-6-(hexahydro-1H-azepin-1-yl)-

![3,6-Pyridazinedione,1-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]-1,2-dihydro-](/structure/89570-66-1.png)
3,6-Pyridazinedione,1-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]-1,2-dihydro-
![[2-[[[(6S)-1-[(3S)-N-(2-Hydroxymethyl Ser-L-Ala-)-3-amino-L-Abu-]-1,4,5,6-tetrahydropyridazine-6-yl]carbonyl-L-Nva-]amino]-3-methyl-2-pentenoyl]-L-Ser-OH](/structure/82534-66-5.png)
![Pyridazine,3-[4-(3,5-difluorophenoxy)-1-piperidinyl]-6-(1H-imidazol-1-yl)-](/structure/921606-66-8.png)
Pyridazine,3-[4-(3,5-difluorophenoxy)-1-piperidinyl]-6-(1H-imidazol-1-yl)-
![1,2,4-Triazolo[4,3-b]pyridazine, 6-chloro-3-[3-(1-pyrrolidinyl)phenyl]-](/structure/596825-66-0.png)
1,2,4-Triazolo[4,3-b]pyridazine, 6-chloro-3-[3-(1-pyrrolidinyl)phenyl]-

1(2H)-Pyridazinecarbothioamide, N-(3-chlorophenyl)tetrahydro-

4,5-Pyridazinedicarbonitrile, 1,4-dihydro-4-(1-methyl-1H-pyrrol-2-yl)-
![Thieno[2,3-d]pyridazine-6(7H)-acetic acid, -alpha--methyl-7-oxo-](/structure/118376-66-2.png)
Thieno[2,3-d]pyridazine-6(7H)-acetic acid, -alpha--methyl-7-oxo-
![5,11-Etheno-7H-pyridazino[4',5':3,4]cyclobuta[1,2-d][1,2,4]triazolo[1,2-a]pyridazine-7,9(8H)-dione](/structure/31618-66-3.png)
5,11-Etheno-7H-pyridazino[4',5':3,4]cyclobuta[1,2-d][1,2,4]triazolo[1,2-a]pyridazine-7,9(8H)-dione

![6H-Pyrrolo[3,4-d]pyridazine,1,4,5,7-tetramethyl-6-[2-methyl-4-(trifluoromethoxy)phenyl]-](/structure/647845-66-7.png)
6H-Pyrrolo[3,4-d]pyridazine,1,4,5,7-tetramethyl-6-[2-methyl-4-(trifluoromethoxy)phenyl]-



1-(2,4-dichlorophenyl)-6-hydroxy-4-oxo-1,4-dihydropyridazine-3-carboxylate
![3,6-Pyridazinedione, 1,2-dihydro-1-[(phenylmethylene)amino]-](/structure/88976-66-3.png)
3,6-Pyridazinedione, 1,2-dihydro-1-[(phenylmethylene)amino]-

![Pyrimido[4,5-d]pyridazine-5,8-dione, 6,7-dihydro-](/structure/36978-66-2.png)
![Pyrimido[4,5-d]pyridazine, 4-(4-chlorophenyl)-2-ethyl-](/structure/106013-66-5.png)
![3-Pyridazinecarboxamide,6-(4-fluorophenyl)-1,4,5,6-tetrahydro-N-[4-(trifluoromethoxy)phenyl]-1-[3-(trifluoromethyl)phenyl]-](/structure/139991-66-5.png)
![1H-Pyrrolo[2,3-c]pyridazine-6-carboxylic acid, 5-amino-3,4-diphenyl-,ethyl ester](/structure/141238-66-6.png)
1H-Pyrrolo[2,3-c]pyridazine-6-carboxylic acid, 5-amino-3,4-diphenyl-,ethyl ester


![3-Pyridazinecarboxylic acid,1-(4-chlorophenyl)-1,4-dihydro-6-methyl-4-oxo-,2-[thioxo[[3-(trifluoromethyl)phenyl]amino]methyl]hydrazide](/structure/355378-66-4.png)

1(6H)-Pyridazinebutanoic acid, 6-imino-4-phenyl-, monohydrochloride
![1H-Indeno[1,2-d]pyridazine-4-carbonitrile,2,9-dihydro-1,9-dioxo-2-phenyl-](/structure/760178-66-3.png)
1H-Indeno[1,2-d]pyridazine-4-carbonitrile,2,9-dihydro-1,9-dioxo-2-phenyl-



3-Pyridazinecarboxamide, N-(3-methylbutyl)-6-(1-piperazinyl)-,mono(trifluoroacetate)
![6,11-Methanocyclodeca[d]pyridazine-1,4-dicarboxylic acid, dimethylester](/structure/104438-66-6.png)
6,11-Methanocyclodeca[d]pyridazine-1,4-dicarboxylic acid, dimethylester

4-Pyridazinecarboxylic acid, 5-acetyl-3,6-dimethyl-, methyl ester
