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Merck
CN

597716

4,5-Dichloro-2-methyl-3(2H)-pyridazinone

97%

Synonym(s):

4,5-Dichloro-2-methylpyridazin-3-one

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About This Item

Empirical Formula (Hill Notation):
C5H4Cl2N2O
CAS Number:
933-76-6
Molecular Weight:
179.00
NACRES:
NA.22
PubChem Substance ID:
24881714
UNSPSC Code:
12352100
MDL number:
MFCD00051686
Assay:
97%
Form:
solid

Key Documents

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InChI

1S/C5H4Cl2N2O/c1-9-5(10)4(7)3(6)2-8-9/h2H,1H3

SMILES string

CN1N=CC(Cl)=C(Cl)C1=O

InChI key

ACKBTCUMGAHRIE-UHFFFAOYSA-N

assay

97%

form

solid

mp

87-91 °C (lit.)

Application

4,5-Dichloro-2-methyl-3(2H)-pyridazinone can be used in the synthesis of 4-amino-3(2H)-pyridazinones and 5-amino-3(2H)-pyridazinones via reaction with N-benzylaminoethanol.

pictograms

Skull and crossbones
GHS06

signalword

Danger

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
MKCF2552
MKBX9500V
MKBW4670V
MKBC8920V
MKBC8920

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"Lipophilicity of regioisomers: a case study on 3 (2H)-pyridazinones"
<BIG>Karolyhazy L, et al.</BIG>
Journal of Molecular Structure: THEOCHEM, 578(01), 89-91 (2002)

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