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Pyridazines and derivatives

Aromatic organic compounds consist of an aromatic six-membered ring containing two adjacent nitrogen atoms and four carbon atoms; includes compounds derived from pyridazines.

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1

4,5-Dichloro-2-methyl-3(2H)-pyridazinone, 97%, Thermo Scientific Chemicals

CAS: 933-76-6 Molecular Formula: C5H4Cl2N2O Molecular Weight (g/mol): 179.00 MDL Number: MFCD00051686 InChI Key: ACKBTCUMGAHRIE-UHFFFAOYSA-N Synonym: 4,5-dichloro-2-methylpyridazin-3 2h-one,4,5-dichloro-2-methyl-3 2h-pyridazinone,3 2h-pyridazinone, 4,5-dichloro-2-methyl,4,5-dichloro-2-methyl-2h-pyridazin-3-one,4,5-dichloro-2-methyl-2,3-dihydropyridazin-3-one,3 2h-pyridazinone,4,5-dichloro-2-methyl,4,5-dichloro-2-methyl-2-hydropyridazin-3-one,pubchem16243,acmc-209wiz,5-24-02-00023 beilstein handbook reference PubChem CID: 120462 IUPAC Name: 4,5-dichloro-2-methylpyridazin-3-one SMILES: CN1N=CC(Cl)=C(Cl)C1=O

PubChem CID 120462
CAS 933-76-6
Molecular Weight (g/mol) 179.00
MDL Number MFCD00051686
SMILES CN1N=CC(Cl)=C(Cl)C1=O
Synonym 4,5-dichloro-2-methylpyridazin-3 2h-one,4,5-dichloro-2-methyl-3 2h-pyridazinone,3 2h-pyridazinone, 4,5-dichloro-2-methyl,4,5-dichloro-2-methyl-2h-pyridazin-3-one,4,5-dichloro-2-methyl-2,3-dihydropyridazin-3-one,3 2h-pyridazinone,4,5-dichloro-2-methyl,4,5-dichloro-2-methyl-2-hydropyridazin-3-one,pubchem16243,acmc-209wiz,5-24-02-00023 beilstein handbook reference
IUPAC Name 4,5-dichloro-2-methylpyridazin-3-one
InChI Key ACKBTCUMGAHRIE-UHFFFAOYSA-N
Molecular Formula C5H4Cl2N2O
2

4,5-Dibromo-2-phenyl-2,3-dihydropyridazin-3-one, 97%, Thermo Scientific™

CAS: 14305-08-9 Molecular Formula: C10H6Br2N2O Molecular Weight (g/mol): 329.979 MDL Number: MFCD00052907 InChI Key: NQJXEMRMTOSSBQ-UHFFFAOYSA-N Synonym: 4,5-dibromo-2-phenylpyridazin-3 2h-one,4,5-dibromo-2-phenyl-2,3-dihydropyridazin-3-one,4,5-dibromo-2-phenyl-3 2h-pyridazinone,3 2h-pyridazinone, 4,5-dibromo-2-phenyl,4,5-dibromo-2-phenyl-3-pyridazinone,4,5-dibromo-2-phenyl-pyridazin-3-one,2-phenyl-4,5-dibromo-3 2h-pyridazinone,3 2h-pyridazinone,4,5-dibromo-2-phenyl,4,5-bis bromanyl-2-phenyl-pyridazin-3-one,4,5-dibromo-2-phenyl-2-hydropyridazin-3-one PubChem CID: 203396 IUPAC Name: 4,5-dibromo-2-phenylpyridazin-3-one SMILES: C1=CC=C(C=C1)N2C(=O)C(=C(C=N2)Br)Br

PubChem CID 203396
CAS 14305-08-9
Molecular Weight (g/mol) 329.979
MDL Number MFCD00052907
SMILES C1=CC=C(C=C1)N2C(=O)C(=C(C=N2)Br)Br
Synonym 4,5-dibromo-2-phenylpyridazin-3 2h-one,4,5-dibromo-2-phenyl-2,3-dihydropyridazin-3-one,4,5-dibromo-2-phenyl-3 2h-pyridazinone,3 2h-pyridazinone, 4,5-dibromo-2-phenyl,4,5-dibromo-2-phenyl-3-pyridazinone,4,5-dibromo-2-phenyl-pyridazin-3-one,2-phenyl-4,5-dibromo-3 2h-pyridazinone,3 2h-pyridazinone,4,5-dibromo-2-phenyl,4,5-bis bromanyl-2-phenyl-pyridazin-3-one,4,5-dibromo-2-phenyl-2-hydropyridazin-3-one
IUPAC Name 4,5-dibromo-2-phenylpyridazin-3-one
InChI Key NQJXEMRMTOSSBQ-UHFFFAOYSA-N
Molecular Formula C10H6Br2N2O
3

4,5-Dichloro-2-(4-methylphenyl)-2,3-dihydropyridazin-3-one, 97%, Thermo Scientific™

CAS: 33098-21-4 Molecular Formula: C11H8Cl2N2O Molecular Weight (g/mol): 255.098 MDL Number: MFCD00135290 InChI Key: OWPCMQKRJFNLHF-UHFFFAOYSA-N Synonym: 4,5-dichloro-2-4-methylphenyl-2,3-dihydropyridazin-3-one,4,5-dichloro-2-4-methylphenyl pyridazin-3-one,3 2h-pyridazinone,4,5-dichloro-2-4-methylphenyl,4,5-dichloro-2-p-tolyl-2h-pyridazin-3-one,4,5-dichloro-2-4-methylphenyl-2-hydropyridazin-3-one,4,5-dichloro-2-p-tolyl pyridazin-3 2h-one,4,5-dichloro-2-4-methylphenyl-3 2h-pyridazinone,4,5-dichloro-2-4-methylphenyl pyridazin-3 2h-one,4,5-dichloro-2-4-methylphenyl-2,3-dihydropyridazin-3one PubChem CID: 2774757 IUPAC Name: 4,5-dichloro-2-(4-methylphenyl)pyridazin-3-one SMILES: CC1=CC=C(C=C1)N2C(=O)C(=C(C=N2)Cl)Cl

PubChem CID 2774757
CAS 33098-21-4
Molecular Weight (g/mol) 255.098
MDL Number MFCD00135290
SMILES CC1=CC=C(C=C1)N2C(=O)C(=C(C=N2)Cl)Cl
Synonym 4,5-dichloro-2-4-methylphenyl-2,3-dihydropyridazin-3-one,4,5-dichloro-2-4-methylphenyl pyridazin-3-one,3 2h-pyridazinone,4,5-dichloro-2-4-methylphenyl,4,5-dichloro-2-p-tolyl-2h-pyridazin-3-one,4,5-dichloro-2-4-methylphenyl-2-hydropyridazin-3-one,4,5-dichloro-2-p-tolyl pyridazin-3 2h-one,4,5-dichloro-2-4-methylphenyl-3 2h-pyridazinone,4,5-dichloro-2-4-methylphenyl pyridazin-3 2h-one,4,5-dichloro-2-4-methylphenyl-2,3-dihydropyridazin-3one
IUPAC Name 4,5-dichloro-2-(4-methylphenyl)pyridazin-3-one
InChI Key OWPCMQKRJFNLHF-UHFFFAOYSA-N
Molecular Formula C11H8Cl2N2O
4

N-Methylmaleic hydrazide, 97%

CAS: 5436-01-1 MDL Number: MFCD00234108

CAS 5436-01-1
MDL Number MFCD00234108
5

6-methyl-2,3-dihydropyridazin-3-one hydrate, Thermo Scientific™

CAS: 7143-82-0 Molecular Formula: C5H6N2O Molecular Weight (g/mol): 110.12 MDL Number: MFCD00039720 InChI Key: QZWIXLPWMGHDDD-UHFFFAOYSA-N Synonym: 6-methylpyridazin-3-ol hydrate,6-methylpyridazin-3 2h-one hydrate,6-methyl-2,3-dihydropyridazin-3-one hydrate,6-methyl-2h-pyridazin-3-one hydrate,6-methylpyridazin-3-one hydrate,3-methyl-1h-pyridazin-6-one hydrate,6-methylpyridazin-3 2h ;-one hydrate,6-methyl-2-hydropyridazin-3-one, hydrate,6-methyl-2,3-dihydropyridazine-3-one hydrate,6-methylpyridazin-3 2h-one-water 1/1 PubChem CID: 2774632 SMILES: CC1=NNC(=O)C=C1

PubChem CID 2774632
CAS 7143-82-0
Molecular Weight (g/mol) 110.12
MDL Number MFCD00039720
SMILES CC1=NNC(=O)C=C1
Synonym 6-methylpyridazin-3-ol hydrate,6-methylpyridazin-3 2h-one hydrate,6-methyl-2,3-dihydropyridazin-3-one hydrate,6-methyl-2h-pyridazin-3-one hydrate,6-methylpyridazin-3-one hydrate,3-methyl-1h-pyridazin-6-one hydrate,6-methylpyridazin-3 2h ;-one hydrate,6-methyl-2-hydropyridazin-3-one, hydrate,6-methyl-2,3-dihydropyridazine-3-one hydrate,6-methylpyridazin-3 2h-one-water 1/1
InChI Key QZWIXLPWMGHDDD-UHFFFAOYSA-N
Molecular Formula C5H6N2O
6

3-Aminophthalhydrazide, 98%, pure

CAS: 521-31-3 Molecular Formula: C8H7N3O2 Molecular Weight (g/mol): 177.16 MDL Number: MFCD00006890 InChI Key: HWYHZTIRURJOHG-UHFFFAOYSA-N Synonym: luminol,3-aminophthalhydrazide,3-aminophthalic hydrazide,5-amino-2,3-dihydro-1,4-phthalazinedione,1,4-phthalazinedione, 5-amino-2,3-dihydro,3-aminophthalic acid hydrazide,5-amino-1,2,3,4-tetrahydrophthalazine-1,4-dione,unii-5exp385q4f,ccris 5962,3-aminophthalylhydrazide PubChem CID: 10638 IUPAC Name: 5-amino-2,3-dihydrophthalazine-1,4-dione SMILES: C1=CC2=C(C(=C1)N)C(=O)NNC2=O

PubChem CID 10638
CAS 521-31-3
Molecular Weight (g/mol) 177.16
MDL Number MFCD00006890
SMILES C1=CC2=C(C(=C1)N)C(=O)NNC2=O
Synonym luminol,3-aminophthalhydrazide,3-aminophthalic hydrazide,5-amino-2,3-dihydro-1,4-phthalazinedione,1,4-phthalazinedione, 5-amino-2,3-dihydro,3-aminophthalic acid hydrazide,5-amino-1,2,3,4-tetrahydrophthalazine-1,4-dione,unii-5exp385q4f,ccris 5962,3-aminophthalylhydrazide
IUPAC Name 5-amino-2,3-dihydrophthalazine-1,4-dione
InChI Key HWYHZTIRURJOHG-UHFFFAOYSA-N
Molecular Formula C8H7N3O2
7

6-Bromo-3-pyridazinamine, 97%, Thermo Scientific™

CAS: 88497-27-2 Molecular Formula: C4H4BrN3 Molecular Weight (g/mol): 174.001 MDL Number: MFCD01646092 InChI Key: FXTDHDQFLZNYKW-UHFFFAOYSA-N PubChem CID: 2794779 IUPAC Name: 6-bromopyridazin-3-amine SMILES: C1=CC(=NN=C1N)Br

PubChem CID 2794779
CAS 88497-27-2
Molecular Weight (g/mol) 174.001
MDL Number MFCD01646092
SMILES C1=CC(=NN=C1N)Br
IUPAC Name 6-bromopyridazin-3-amine
InChI Key FXTDHDQFLZNYKW-UHFFFAOYSA-N
Molecular Formula C4H4BrN3
8

Desmethyl Norflurazon, TRC

CAS: 23576-24-1 Molecular Formula: C11 H7 Cl F3 N3 O Molecular Weight (g/mol): 289.64 Synonym: 3(2H)-Pyridazinone, 5-amino-4-chloro-2-[3-(trifluoromethyl)phenyl]-,3(2H)-Pyridazinone, 5-amino-4-chloro-2-(α,α,α-trifluoro-m-tolyl)- (8CI),5-Amino-4-chloro-2-[3-(trifluoromethyl)phenyl]-3(2H)-pyridazinone,4-Chloro-5-amino-2-(α,α,α-trifluoro-m-tolyl)-3(2H)-pyridazinone,Desmethylnorflurazon,SAN 9774,Norflurazon-desmethyl IUPAC Name: 5-amino-4-chloro-2-[3-(trifluoromethyl)phenyl]pyridazin-3-one SMILES: NC1=C(Cl)C(=O)N(N=C1)c2cccc(c2)C(F)(F)F

CAS 23576-24-1
Molecular Weight (g/mol) 289.64
SMILES NC1=C(Cl)C(=O)N(N=C1)c2cccc(c2)C(F)(F)F
Synonym 3(2H)-Pyridazinone, 5-amino-4-chloro-2-[3-(trifluoromethyl)phenyl]-,3(2H)-Pyridazinone, 5-amino-4-chloro-2-(α,α,α-trifluoro-m-tolyl)- (8CI),5-Amino-4-chloro-2-[3-(trifluoromethyl)phenyl]-3(2H)-pyridazinone,4-Chloro-5-amino-2-(α,α,α-trifluoro-m-tolyl)-3(2H)-pyridazinone,Desmethylnorflurazon,SAN 9774,Norflurazon-desmethyl
IUPAC Name 5-amino-4-chloro-2-[3-(trifluoromethyl)phenyl]pyridazin-3-one
Molecular Formula C11 H7 Cl F3 N3 O
9

Methyldesphenylchloridazon, TRC

CAS: 17254-80-7 Molecular Formula: C5 H6 Cl N3 O Molecular Weight (g/mol): 159.57 Synonym: 5-Amino-4-chloro-2-methyl-3(2H)-pyridazinone,Methyldesphenylchloridazon IUPAC Name: 5-amino-4-chloro-2-methylpyridazin-3-one SMILES: CN1N=CC(=C(Cl)C1=O)N

CAS 17254-80-7
Molecular Weight (g/mol) 159.57
SMILES CN1N=CC(=C(Cl)C1=O)N
Synonym 5-Amino-4-chloro-2-methyl-3(2H)-pyridazinone,Methyldesphenylchloridazon
IUPAC Name 5-amino-4-chloro-2-methylpyridazin-3-one
Molecular Formula C5 H6 Cl N3 O
10

3-Amino-6-chloropyridazine, 98%

CAS: 5469-69-2 Molecular Formula: C4H4ClN3 Molecular Weight (g/mol): 129.55 MDL Number: MFCD00051506 InChI Key: DTXVKPOKPFWSFF-UHFFFAOYSA-N Synonym: 3-amino-6-chloropyridazine,3-pyridazinamine, 6-chloro,6-chloro-3-pyridazinamine,6-amino-3-chloropyridazine,6-chloro-3-aminopyridazine,6-chloropyridazin-3-ylamine,6-chloro-pyridazin-3-ylamine,unii-ijs443slzg,3-chloro-6-pyridazinamine,6-chloro-3-pyridazinylamine PubChem CID: 21643 IUPAC Name: 6-chloropyridazin-3-amine SMILES: NC1=CC=C(Cl)N=N1

PubChem CID 21643
CAS 5469-69-2
Molecular Weight (g/mol) 129.55
MDL Number MFCD00051506
SMILES NC1=CC=C(Cl)N=N1
Synonym 3-amino-6-chloropyridazine,3-pyridazinamine, 6-chloro,6-chloro-3-pyridazinamine,6-amino-3-chloropyridazine,6-chloro-3-aminopyridazine,6-chloropyridazin-3-ylamine,6-chloro-pyridazin-3-ylamine,unii-ijs443slzg,3-chloro-6-pyridazinamine,6-chloro-3-pyridazinylamine
IUPAC Name 6-chloropyridazin-3-amine
InChI Key DTXVKPOKPFWSFF-UHFFFAOYSA-N
Molecular Formula C4H4ClN3
11

4-Aminophthalhydrazide, 98%

CAS: 3682-14-2 Molecular Formula: C8H7N3O2 Molecular Weight (g/mol): 177.16 MDL Number: MFCD00010560 InChI Key: HUDPLKWXRLNSPC-UHFFFAOYSA-N Synonym: 4-aminophthalhydrazide,isoluminol,6-aminophthalazine-1,4-diol,chembl14882,1,4-phthalazinedione, 6-amino-2,3-dihydro,6-amino-2,3-dihydro-1,4-phthalazinedione,iso-luminol,1enu,4-aminophthaloylhydrazine,4-amino-phthalsaeure-hydrazid PubChem CID: 95014 SMILES: NC1=CC=C2C(=O)NNC(=O)C2=C1

PubChem CID 95014
CAS 3682-14-2
Molecular Weight (g/mol) 177.16
MDL Number MFCD00010560
SMILES NC1=CC=C2C(=O)NNC(=O)C2=C1
Synonym 4-aminophthalhydrazide,isoluminol,6-aminophthalazine-1,4-diol,chembl14882,1,4-phthalazinedione, 6-amino-2,3-dihydro,6-amino-2,3-dihydro-1,4-phthalazinedione,iso-luminol,1enu,4-aminophthaloylhydrazine,4-amino-phthalsaeure-hydrazid
InChI Key HUDPLKWXRLNSPC-UHFFFAOYSA-N
Molecular Formula C8H7N3O2
12

4,5-Dibromo-3(2H)-pyridazinone, 98%

CAS: 5788-58-9 Molecular Formula: C4H2Br2N2O Molecular Weight (g/mol): 253.881 MDL Number: MFCD00023641 InChI Key: AGLQURQNVJVJNB-UHFFFAOYSA-N Synonym: 4,5-dibromopyridazin-3 2h-one,4,5-dibromo-3 2h-pyridazinone,4,5-dibromopyridazin-3-one,4,5-dibromopyridazine-3 2h-one,4,5-dibromopyridazin-3-ol,4,5-dibromo-2,3-dihydropyridazin-3-one,3 2h-pyridazinone, 4,5-dibromo,4,5-dibromo-2h-pyridazin-3-one,4,5-dibromo-2-hydropyridazin-3-one PubChem CID: 236181 IUPAC Name: 4,5-dibromo-1H-pyridazin-6-one SMILES: C1=NNC(=O)C(=C1Br)Br

PubChem CID 236181
CAS 5788-58-9
Molecular Weight (g/mol) 253.881
MDL Number MFCD00023641
SMILES C1=NNC(=O)C(=C1Br)Br
Synonym 4,5-dibromopyridazin-3 2h-one,4,5-dibromo-3 2h-pyridazinone,4,5-dibromopyridazin-3-one,4,5-dibromopyridazine-3 2h-one,4,5-dibromopyridazin-3-ol,4,5-dibromo-2,3-dihydropyridazin-3-one,3 2h-pyridazinone, 4,5-dibromo,4,5-dibromo-2h-pyridazin-3-one,4,5-dibromo-2-hydropyridazin-3-one
IUPAC Name 4,5-dibromo-1H-pyridazin-6-one
InChI Key AGLQURQNVJVJNB-UHFFFAOYSA-N
Molecular Formula C4H2Br2N2O
13

1(2H)-Phthalazinone, 98+%

CAS: 119-39-1 Molecular Formula: C8H6N2O Molecular Weight (g/mol): 146.15 MDL Number: MFCD00006892 InChI Key: IJAPPYDYQCXOEF-UHFFFAOYSA-N Synonym: 1 2h-phthalazinone,phthalazin-1 2h-one,phthalazone,phthalazinone,phthalazin-1-one,1-phthalazinol,phthalazin-1-ol,1-hydroxyphthalazine,1 2h phthalazinone,1,2-dihydrophthalazin-1-one PubChem CID: 8394 ChEBI: CHEBI:34023 IUPAC Name: 2H-phthalazin-1-one SMILES: C1=CC=C2C(=C1)C=NNC2=O

PubChem CID 8394
CAS 119-39-1
Molecular Weight (g/mol) 146.15
ChEBI CHEBI:34023
MDL Number MFCD00006892
SMILES C1=CC=C2C(=C1)C=NNC2=O
Synonym 1 2h-phthalazinone,phthalazin-1 2h-one,phthalazone,phthalazinone,phthalazin-1-one,1-phthalazinol,phthalazin-1-ol,1-hydroxyphthalazine,1 2h phthalazinone,1,2-dihydrophthalazin-1-one
IUPAC Name 2H-phthalazin-1-one
InChI Key IJAPPYDYQCXOEF-UHFFFAOYSA-N
Molecular Formula C8H6N2O
14

4-chloro-1,2-dihydrophthalazin-1-one, 97%, Thermo Scientific™

CAS: 2257-69-4 Molecular Formula: C8H5ClN2O Molecular Weight (g/mol): 180.59 MDL Number: MFCD00102192 InChI Key: QCKGMJDOJRNSMS-UHFFFAOYSA-N Synonym: 4-chlorophthalazin-1 2h-one,4-chloro-1,2-dihydrophthalazin-1-one,4-chlorophthalazin-1-ol,1 2h-phthalazinone, 4-chloro,4-chloro-1 2h-phthalazinone,4-chlorophthalazone,4-chloro-1-phthalazinol,4-chlorophthalazin-1-one,1-chlorophthalazin-4-one,1-chlorophthalazine-4-one PubChem CID: 2775142 IUPAC Name: 4-chloro-2H-phthalazin-1-one SMILES: ClC1=NNC(=O)C2=CC=CC=C12

PubChem CID 2775142
CAS 2257-69-4
Molecular Weight (g/mol) 180.59
MDL Number MFCD00102192
SMILES ClC1=NNC(=O)C2=CC=CC=C12
Synonym 4-chlorophthalazin-1 2h-one,4-chloro-1,2-dihydrophthalazin-1-one,4-chlorophthalazin-1-ol,1 2h-phthalazinone, 4-chloro,4-chloro-1 2h-phthalazinone,4-chlorophthalazone,4-chloro-1-phthalazinol,4-chlorophthalazin-1-one,1-chlorophthalazin-4-one,1-chlorophthalazine-4-one
IUPAC Name 4-chloro-2H-phthalazin-1-one
InChI Key QCKGMJDOJRNSMS-UHFFFAOYSA-N
Molecular Formula C8H5ClN2O
15

6-chloropyridazin-3-amine, Thermo Scientific™, 97%, Thermo Scientific™

CAS: 5469-69-2 Molecular Formula: C4H4ClN3 Molecular Weight (g/mol): 129.55 MDL Number: MFCD00051506 InChI Key: DTXVKPOKPFWSFF-UHFFFAOYSA-N Synonym: 3-amino-6-chloropyridazine,3-pyridazinamine, 6-chloro,6-chloro-3-pyridazinamine,6-amino-3-chloropyridazine,6-chloro-3-aminopyridazine,6-chloropyridazin-3-ylamine,6-chloro-pyridazin-3-ylamine,unii-ijs443slzg,3-chloro-6-pyridazinamine,6-chloro-3-pyridazinylamine PubChem CID: 21643 IUPAC Name: 6-chloropyridazin-3-amine SMILES: NC1=CC=C(Cl)N=N1

PubChem CID 21643
CAS 5469-69-2
Molecular Weight (g/mol) 129.55
MDL Number MFCD00051506
SMILES NC1=CC=C(Cl)N=N1
Synonym 3-amino-6-chloropyridazine,3-pyridazinamine, 6-chloro,6-chloro-3-pyridazinamine,6-amino-3-chloropyridazine,6-chloro-3-aminopyridazine,6-chloropyridazin-3-ylamine,6-chloro-pyridazin-3-ylamine,unii-ijs443slzg,3-chloro-6-pyridazinamine,6-chloro-3-pyridazinylamine
IUPAC Name 6-chloropyridazin-3-amine
InChI Key DTXVKPOKPFWSFF-UHFFFAOYSA-N
Molecular Formula C4H4ClN3