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757675

Sigma-Aldrich

2,4,5-Trichloro-3(2H)-pyridazinone

96%

Synonym(s):

2,4,5-Trichloro-2,3-dihydropyridazin-3-one, 2,4,5-Trichloro-2H-pyridazin-3-one

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About This Item

Empirical Formula (Hill Notation):
C4HCl3N2O
CAS Number:
Molecular Weight:
199.42
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

assay

96%

form

powder

mp

144-150 °C

functional group

chloro

SMILES string

ClN1N=CC(Cl)=C(Cl)C1=O

InChI

1S/C4HCl3N2O/c5-2-1-8-9(7)4(10)3(2)6/h1H

Inchi Key

TYVNCWJMACHFGT-UHFFFAOYSA-N

Application

Electrophilic chlorinating reagent, particully effective for the chlorination of bithiophenes[1]

Pictograms

Skull and crossbones

signalword

Danger

hcodes

Hazard Classifications

Acute Tox. 3 Oral

Storage Class

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

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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2-Chloropyridazin-3(2H)-ones as Electrophilic Chlorinating Agents: Effective a-Chlorination of Active Methylene/Methine Compounds
Yong-Dae P.; et al.
Synthesis, 7, 1136-1140 (2005)

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