Pyridazine compounds

Pyridazines refer to nitrogen-containing six-membered heterocyclic azine compounds, as isomers of pyrimidines and pyrazines respectively. They are insoluble in petroleum ether, but soluble in methanol, ethanol and miscible with water, benzene and dimethylformamide. Pyridazine is a weak base that can form salts with picric acid, hydrochloric acid, etc.

Pyridazine is not prone to nucleophilic and electrophilic aromatic substitution reaction and is very stable under potassium permanganate. It can be converted to 1,4-diaminobutane after the open-chain reduction by sodium and alcohols. Pyridazine is widely used as pharmaceutical raw materials, such as long-term sulfa SMP, a pyridazine derivative, 4-amino-cinnoline as an antimalarial, hydralazine as a hypotensor, etc. , all of which are made from pyridazine; also used as raw material of pesticides such as herbicides,pyramine, ethirimol,brompyrazon, Kusakira,maleic hydrazide,insecticide,Ofunack and so on.

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Structure Chemical Name CAS MF
3-CHLORO-6-PYRROLIDIN-1-YL-PYRIDAZINE 3-CHLORO-6-PYRROLIDIN-1-YL-PYRIDAZINE 66346-85-8 C8H10ClN3
2-BENZYL-4,5-DICHLORO-2,3-DIHYDROPYRIDAZIN-3-ONE 2-BENZYL-4,5-DICHLORO-2,3-DIHYDROPYRIDAZIN-3-ONE 41933-33-9 C11H8Cl2N2O
METHYL 6-OXO-1,6-DIHYDROPYRIDAZINE-3-CARBOXYLATE METHYL 6-OXO-1,6-DIHYDROPYRIDAZINE-3-CARBOXYLATE 63001-30-9 C6H6N2O3
5-METHYLPYRIDAZIN-3-AMINE 5-METHYLPYRIDAZIN-3-AMINE 144294-43-9 C5H7N3
6-oxo-1,6-dihydropyridazine-4-carboxylicacid 6-oxo-1,6-dihydropyridazine-4-carboxylicacid 867130-58-3 C5H4N2O3
4,5-DIHYDRO-6-PHENYL-3(2H)-PYRIDAZINONE 4,5-DIHYDRO-6-PHENYL-3(2H)-PYRIDAZINONE 1011-46-7 C10H10N2O
5-AMINO-3-CHLOROPYRIDAZINE 5-AMINO-3-CHLOROPYRIDAZINE 29049-45-4 C4H4ClN3
3-PYRIDAZINYLMETHYLAMINE,97% 3-PYRIDAZINYLMETHYLAMINE,97% 93319-65-4 C5H7N3
Pyridazine-4-carboxylic acid methyl ester Pyridazine-4-carboxylic acid methyl ester 34231-77-1 C6H6N2O2
Pyridazine N-oxide Pyridazine N-oxide 1457-42-7 C4H4N2O
Imidazo[1,2-b]pyridazine, 6-chloro-2-(chloromethyl)- Imidazo[1,2-b]pyridazine, 6-chloro-2-(chloromethyl)- 154578-23-1 C7H5Cl2N3
3-AMINO-6-PHENYLTHIOPYRIDAZINE 3-AMINO-6-PHENYLTHIOPYRIDAZINE 90844-35-2 C10H9N3S
4-TERT-BUTYL-3,6-DICHLOROPYRIDAZINE 4-TERT-BUTYL-3,6-DICHLOROPYRIDAZINE 22808-29-3 C8H10Cl2N2
3-CHLORO-6-ETHOXYPYRIDAZINE 3-CHLORO-6-ETHOXYPYRIDAZINE 17321-20-9 C6H7ClN2O
HEXAHYDROPYRIDAZINE-3-CARBOXYLIC ACID HEXAHYDROPYRIDAZINE-3-CARBOXYLIC ACID 32750-52-0 C5H10N2O2
1-(6-Chloro-pyridazino-3-yl)piperidine 1-(6-Chloro-pyridazino-3-yl)piperidine 1722-11-8 C9H12ClN3
methyl6-chloropyridazine-4-carboxylate methyl6-chloropyridazine-4-carboxylate 1093860-48-0 C6H5ClN2O2
6-Chloro-N-(3-methoxypropyl)pyridazin-3-amine 6-Chloro-N-(3-methoxypropyl)pyridazin-3-amine 898656-60-5 C8H12ClN3O
5-METHOXYPYRIDAZIN-3(2H)-ONE 5-METHOXYPYRIDAZIN-3(2H)-ONE 123696-01-5 C5H6N2O2
4-METHOXYPYRIDAZINE 4-METHOXYPYRIDAZINE 20733-11-3 C5H6N2O
mesoridazine mesoridazine 5588-33-0 C21H26N2OS2
6-Propoxypyridazin-3-amine 6-Propoxypyridazin-3-amine 90008-50-7 C7H11N3O
3-AMINO-6-CHLORO-4,5-DIMETHYLPYRIDAZINE 3-AMINO-6-CHLORO-4,5-DIMETHYLPYRIDAZINE 76593-36-7 C6H8ClN3
3-Pyridazinecarboxylic acid methyl ester 3-Pyridazinecarboxylic acid methyl ester 34253-02-6 C6H6N2O2
IMIDAZO[1,2-B]PYRIDAZIN-6-AMINE IMIDAZO[1,2-B]PYRIDAZIN-6-AMINE 6653-96-9 C6H6N4
6-HYDROXYIMIDAZO[1,2-B]PYRIDAZINE 6-HYDROXYIMIDAZO[1,2-B]PYRIDAZINE 57470-54-9 C6H5N3O
3-Phenyl-5,6-dichloropyridazine 3-Phenyl-5,6-dichloropyridazine 64942-62-7 C10H6Cl2N2
6-chloro-5-Methyl-3,6-dihydropyridazin-3-aMine 6-chloro-5-Methyl-3,6-dihydropyridazin-3-aMine 66346-87-0 C5H6ClN3
3-(BROMOMETHYL)PYRIDAZINE, 3-(BROMOMETHYL)PYRIDAZINE, 60023-36-1 C5H5BrN2
3,6-Di(1H-imidazol-1-yl)pyridazine 3,6-Di(1H-imidazol-1-yl)pyridazine 177648-99-6 C10H8N6
3-chloro-7H-pyrrolo[2,3-c]pyridazine 3-chloro-7H-pyrrolo[2,3-c]pyridazine 1207625-18-0 C6H4ClN3
1-methyl-6-oxo-1,6-dihydropyridazine-3-carboxylic acid 1-methyl-6-oxo-1,6-dihydropyridazine-3-carboxylic acid 100047-66-3 C6H6N2O3
1-(6-Chloro-3-pyridazinyl)-4-piperidinecarboxamide 1-(6-Chloro-3-pyridazinyl)-4-piperidinecarboxamide 303149-97-5 C10H13ClN4O
Methyl 4,6-dichloropyridazine-3-carboxylate Methyl 4,6-dichloropyridazine-3-carboxylate 372118-01-9 C6H4Cl2N2O2
4-HYDROXY-5-NITROPYRIDAZIN-3(2H)-ONE 4-HYDROXY-5-NITROPYRIDAZIN-3(2H)-ONE 2854-59-3 C4H3N3O4
HEXAHYDROPYRIDAZINE DIHYDROCHLORIDE HEXAHYDROPYRIDAZINE DIHYDROCHLORIDE 124072-89-5 C4H12Cl2N2
N-(6-Chloro-3-pyridazinyl)acetamide N-(6-Chloro-3-pyridazinyl)acetamide 14959-31-0 C6H6ClN3O
Ethanone, 1-(3-pyridazinyl)- (9CI) Ethanone, 1-(3-pyridazinyl)- (9CI) 1122-63-0 C6H6N2O
Pyrimido[4,5-c]pyridazin-5(1H)-one (9CI) Pyrimido[4,5-c]pyridazin-5(1H)-one (9CI) 34122-01-5 C6H4N4O
Pyridazine, 3,6-dione, 4-bromo-1,2-dihydro- Pyridazine, 3,6-dione, 4-bromo-1,2-dihydro- 15456-86-7 C4H3BrN2O2
1-(6-Chloropyridazino-3-yl)piperazine 1-(6-Chloropyridazino-3-yl)piperazine 56392-83-7 C8H11ClN4
3-Chloropyridazine-4-carboxylicacid 3-Chloropyridazine-4-carboxylicacid 1023307-42-7 C5H3ClN2O2
6-CHLORO-IMIDAZO[1,2-B]PYRIDAZIN-3-AMINE 6-CHLORO-IMIDAZO[1,2-B]PYRIDAZIN-3-AMINE 166176-45-0 C6H5ClN4
3-CHLOROPYRIDAZINE-4-CARBONITRILE 3-CHLOROPYRIDAZINE-4-CARBONITRILE 1445-56-3 C5H2ClN3
4-AMINO-5-CHLOROPYRIDAZIN-6-ON 4-AMINO-5-CHLOROPYRIDAZIN-6-ON 6339-19-1 C4H4ClN3O
3-METHYL-6-(1-METHYLHYDRAZINO)PYRIDAZINE 3-METHYL-6-(1-METHYLHYDRAZINO)PYRIDAZINE 175135-44-1 C6H10N4
4,5-DICHLORO-6-NITRO-2,3-DIHYDROPYRIDAZIN-3-ONE 4,5-DICHLORO-6-NITRO-2,3-DIHYDROPYRIDAZIN-3-ONE 13645-43-7 C4HCl2N3O3
3-Pyridazinecarboxylic acid, 6-chloro-,1-methylethyl ester 3-Pyridazinecarboxylic acid, 6-chloro-,1-methylethyl ester 321946-09-2 C8H9ClN2O2
6-Chloro-2,3-diphenylimidazo[1,2-b]pyridazine 6-Chloro-2,3-diphenylimidazo[1,2-b]pyridazine 873913-87-2 C18H12ClN3
3(2H)-Pyridazinone,4-amino-(6CI,9CI) 3(2H)-Pyridazinone,4-amino-(6CI,9CI) 55271-46-0 C4H5N3O
3,6-Pyridazinediamine(9CI) 3,6-Pyridazinediamine(9CI) 61070-99-3 C4H6N4
2-(6-CHLORO-3-PYRIDAZINYL)-2-(2-PYRIDINYL)ACETONITRILE 2-(6-CHLORO-3-PYRIDAZINYL)-2-(2-PYRIDINYL)ACETONITRILE 338779-25-2 C11H7ClN4
6-Chloro-N-cyclopropylpyridazin-3-amine 6-Chloro-N-cyclopropylpyridazin-3-amine 941294-45-7 C7H8ClN3
6-METHYLIMIDAZO[1,2-B]PYRIDAZINE 6-METHYLIMIDAZO[1,2-B]PYRIDAZINE 17412-38-3 C7H7N3
ETHYL 4-PYRIDAZINECARBOXYLATE ETHYL 4-PYRIDAZINECARBOXYLATE 39123-39-2 C7H8N2O2
1-Imidazo[1,2-b]pyridazin-3-ylethanone 1-Imidazo[1,2-b]pyridazin-3-ylethanone 453548-65-7 C8H7N3O
3-BROMO-6-CHLOROPYRIDAZINE 3-BROMO-6-CHLOROPYRIDAZINE 89089-18-9 C4H2BrClN2
3-Pyridazinecarboxylicacid,6-amino-,methylester(6CI,9CI) 3-Pyridazinecarboxylicacid,6-amino-,methylester(6CI,9CI) 98140-96-6 C6H7N3O2
3,6-difluoropyridazine 3,6-difluoropyridazine 33097-39-1 C4H2F2N2
4-AMINO-3-CHLOROPYRIDAZINE 4-AMINO-3-CHLOROPYRIDAZINE 55928-83-1 C4H4ClN3
4-chloro-6-phenylpyridazin-3(2H)-one 4-chloro-6-phenylpyridazin-3(2H)-one 89868-14-4 C10H7ClN2O
3-Chloro-6-(1H-imidazol-1-yl)pyridazine 3-Chloro-6-(1H-imidazol-1-yl)pyridazine 71037-71-3 C7H5ClN4
6-CHLORO-3-IODOIMIDAZO[1,2-B]PYRIDAZINE 6-CHLORO-3-IODOIMIDAZO[1,2-B]PYRIDAZINE 923595-49-7 C6H3ClIN3
6-CHLORO-3-METHYL-IMIDAZO[1,2-B]PYRIDAZINE 6-CHLORO-3-METHYL-IMIDAZO[1,2-B]PYRIDAZINE 137384-48-6 C7H6ClN3
4-CHLORO-5-HYDRAZINOPYRIDAZIN-3(2H)-ONE 4-CHLORO-5-HYDRAZINOPYRIDAZIN-3(2H)-ONE 6959-56-4 C4H5ClN4O
Tetrahydro-1,3(2H)-pyridazinedicarboxylic acid 1-(phenylmethyl) ester Tetrahydro-1,3(2H)-pyridazinedicarboxylic acid 1-(phenylmethyl) ester 72120-54-8 C13H16N2O4
6-cyclopropylpyridazin-3-amine 6-cyclopropylpyridazin-3-amine 1159814-07-9 C7H9N3
(6-CHLORO-PYRIDAZIN-3-YL)-METHYL-AMINE (6-CHLORO-PYRIDAZIN-3-YL)-METHYL-AMINE 871826-15-2 C5H6ClN3
3-Chloro-6-(1H-pyrazol-1-yl)pyridazine 3-Chloro-6-(1H-pyrazol-1-yl)pyridazine 29334-66-5 C7H5ClN4
Hexahydropyridazin Hexahydropyridazin 505-19-1 C4H10N2
3(2H)-Pyridazinone,5-amino-(6CI,7CI,9CI) 3(2H)-Pyridazinone,5-amino-(6CI,7CI,9CI) 89033-30-7 C4H5N3O
(6-CHLORO-PYRIDAZIN-3-YL)-DIMETHYL-AMINE (6-CHLORO-PYRIDAZIN-3-YL)-DIMETHYL-AMINE 7145-60-0 C6H8ClN3
4-PYRIDAZINEMETHANAMINE 4-PYRIDAZINEMETHANAMINE 519020-42-9 C5H7N3
4-CHLOROPYRIDAZINE 4-CHLOROPYRIDAZINE 17180-92-6 C4H3ClN2
2,3-DIHYDRO-3-OXO-4-PYRIDAZINECARBONITRILE 2,3-DIHYDRO-3-OXO-4-PYRIDAZINECARBONITRILE 64882-65-1 C5H3N3O
3-(Chloromethyl)pyridazine 3-(Chloromethyl)pyridazine 41227-72-9 C5H5ClN2
3-AMINO-6-PHENYLPYRIDAZINE 3-AMINO-6-PHENYLPYRIDAZINE 14966-91-7 C10H9N3
4-CHLORO-3(2H)-PYRIDAZINONE 4-CHLORO-3(2H)-PYRIDAZINONE 1677-79-8 C4H3ClN2O
3-AMINO-4-METHYL-PYRIDAZINE 3-AMINO-4-METHYL-PYRIDAZINE 90568-15-3 C5H7N3
6-Amino-3(2H)-pyridazinone 6-Amino-3(2H)-pyridazinone 10071-13-3 C4H5N3O
3-Pyridazinecarboxylicacid,6-methyl-,methylester(9CI) 3-Pyridazinecarboxylicacid,6-methyl-,methylester(9CI) 106584-51-4 C7H8N2O2
6-CHLORO-IMIDAZO[1,2-B]PYRIDAZINE-3-CARBOXALDEHYDE 6-CHLORO-IMIDAZO[1,2-B]PYRIDAZINE-3-CARBOXALDEHYDE 154578-26-4 C7H4ClN3O
2,6-DICHLOROIMIDAZO[1,2-B]PYRIDAZINE 2,6-DICHLOROIMIDAZO[1,2-B]PYRIDAZINE 112581-77-8 C6H3Cl2N3
3-bromo-6-methylpyridazine 3-bromo-6-methylpyridazine 65202-58-6 C5H5BrN2
3,5-dichloropyridazin-4-amine 3,5-dichloropyridazin-4-amine 53180-76-0 C4H3Cl2N3
3-MERCAPTO-6-METHYLPYRIDAZINE 3-MERCAPTO-6-METHYLPYRIDAZINE 5788-47-6 C5H6N2S
2-(6-CHLORO-3-PYRIDAZINYL)-2-PHENYLACETONITRILE 2-(6-CHLORO-3-PYRIDAZINYL)-2-PHENYLACETONITRILE 73535-73-6 C12H8ClN3
3-(Butylamino)-6-chloropyridazine 3-(Butylamino)-6-chloropyridazine 1009-84-3 C8H12ClN3
3-METHYL-5-PHENYLPYRIDAZINE 3-METHYL-5-PHENYLPYRIDAZINE 184021-10-1 C11H10N2
5-Trifluoromethyl-2H-pyridazine-2-one 5-Trifluoromethyl-2H-pyridazine-2-one 244268-34-6 C5H3F3N2O
3-CHLORO-6-(2-PYRIDINYLMETHYL)PYRIDAZINE 3-CHLORO-6-(2-PYRIDINYLMETHYL)PYRIDAZINE 338779-81-0 C10H8ClN3
6-CHLORO-3-OXO-2,3-DIHYDROPYRIDAZINE-4-CARBOXYLIC ACID 6-CHLORO-3-OXO-2,3-DIHYDROPYRIDAZINE-4-CARBOXYLIC ACID 50681-26-0 C5H3ClN2O3
4-Cyanopyridazine 4-Cyanopyridazine 68776-62-5 C5H3N3
6-METHYL-3-PYRIDAZINECARBOXYLIC ACID 6-METHYL-3-PYRIDAZINECARBOXYLIC ACID 64210-60-2 C6H6N2O2
3-(HYDRAZINO)PYRIDAZINE HYDROCHLORIDE 3-(HYDRAZINO)PYRIDAZINE HYDROCHLORIDE 117043-87-5 C4H7ClN4
4-Pyridazinemethanol 4-Pyridazinemethanol 50901-43-4 C5H6N2O
ethyl6-chloro-3-hydroxypyridazine-4-carboxylate ethyl6-chloro-3-hydroxypyridazine-4-carboxylate 61404-41-9 C7H7ClN2O3
3-PYRIDAZINAMINE, 6-(1-METHYLETHYL)- 3-PYRIDAZINAMINE, 6-(1-METHYLETHYL)- 570416-37-4 C7H11N3
3,6-dichloropyridazin-4-ol 3,6-dichloropyridazin-4-ol 2779-81-9 C4H2Cl2N2O
3-Amino-6-(propylthio)pyridazine 3-Amino-6-(propylthio)pyridazine 113121-36-1 C7H11N3S
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