4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE

Product Name: 4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE
CAS No.: 63910-43-0
Chemical Name: 4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE
Synonyms: AURORA KA-6685;4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE;5-chloro-4-methoxy-1H-pyridazin-6-one;3(2H)-Pyridazinone, 4-chloro-5-methoxy-;4-Chloro-5-methoxy-3(2H)-pyridazinone;4-chloro-5-methoxy-2,3-dihydropyridazin-3-one;4-Chloro-2,3-dihydro-5-methoxy-3-oxopyridazine;4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE ISO 9001：2015 REACH
CBNumber: CB3445170
Molecular Formula: C5H5ClN2O2
Formula Weight: 160.56
MOL File: 63910-43-0.mol

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4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE Property

Melting point:: 225 °C(dec.)
Density: 1.51±0.1 g/cm3(Predicted)
storage temp.: under inert gas (nitrogen or Argon) at 2-8°C
form: powder to crystal
pka: 8.90±0.60(Predicted)
color: White to Orange to Green

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Safety

HS Code: 2933399990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

TCI Chemical

Product number: C2972
Product name: 4-Chloro-5-methoxy-3(2H)-pyridazinone
Purity: >98.0%(GC)(T)
Packaging: 1g
Price: $189
Updated: 2025/07/31

TCI Chemical

Product number: C2972
Product name: 4-Chloro-5-methoxy-3(2H)-pyridazinone
Purity: >98.0%(GC)(T)
Packaging: 200mg
Price: $64
Updated: 2025/07/31

TRC

Product number: C381765
Product name: 4-Chloro-5-methoxypyridazin-3(2H)-one
Packaging: 100mg
Price: $45
Updated: 2021/12/16

AK Scientific

Product number: W7573
Product name: 4-Chloro-5-methoxypyridazin-3(2H)-one
Packaging: 1g
Price: $104
Updated: 2021/12/16

SynQuest Laboratories

Product number: 4H17-5-1G
Product name: 4-Chloro-5-methoxypyridazin-3(2H)-one
Packaging: 1g
Price: $200
Updated: 2021/12/16

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4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE Chemical Properties,Usage,Production

Synthesis

932-22-9

124-41-4

63910-43-0

General procedure for the synthesis of 4-chloro-5-methoxypyridazin-3(2H)-one (10): to a solution of 4,5-dichloropyridazin-3(2H)-one (4.1 g, 24.8 mmol) in methanol (50 mL) was added sodium methanolate (2.6 g, 74.5 mmol). The reaction mixture was stirred at 80 °C overnight. Upon completion of the reaction, the mixture was concentrated under reduced pressure and purified by column chromatography [eluent: petroleum ether to petroleum ether/dichloromethane/methanol (10:1:1)] to afford the target product, 4-chloro-5-methoxypyridazin-3(2H)-one (10) (1.2 g, 30% yield), as a white solid. The procedure for the synthesis of 4-chloro-2-(2-chlorobenzyl)-5-methoxypyridazin-3(2H)-one (11) was not provided with complete information.

References

[1] Journal of Medicinal Chemistry, 2004, vol. 47, # 19, p. 4716 - 4730
[2] Patent: WO2015/143164, 2015, A1. Location in patent: Page/Page column 115
[3] Monatshefte fuer Chemie, 1989, vol. 120, p. 329 - 342

4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE Preparation Products And Raw materials

Raw materials

Preparation Products

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4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE Suppliers

Americas 1 Austria 1 China 90 Europe 1 Germany 1 India 3 Japan 1 United Kingdom 2 United States 14 Global 114

SiChuang NanBu Honesty Technology Co., Ltd.

Tel: 0838-5675166 15883665058
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TCI (Shanghai) Development Co., Ltd.

Tel: 021-67121386
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Email: Sales-CN@TCIchemicals.com
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Jia Xing Isenchem Co.,Ltd

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Tetranov Biopharm

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Adamas Reagent, Ltd.

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Shanghai Hanhong Scientific Co.,Ltd.

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China DongFan Chemical Co.,LTD

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Jinan Trio PharmaTech Co., Ltd.

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Chiba Pharmaceutical Science and technology Co, Ltd.

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TOKYO CHEMICAL INDUSTRY CO., LTD.

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View Lastest Price from 4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE manufacturers

Shanghai Rlavie Technology Co ltd

Product: 4-chloro-5-methoxypyridazin-3(2H)-one 63910-43-0
Price: US $0.00-0.00/KG
Min. Order: 1g
Purity: 98%minHPLC
Supply Ability: 10kgs/month
Release date: 2021-11-13

Career Henan Chemical Co

Product: 4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE 63910-43-0
Price: US $1.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 200kg
Release date: 2019-12-25

Nanjing jinheyou Trading Co., Ltd.

Product: 4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE 63910-43-0
Price: US $0.00/g
Min. Order: 1g
Purity: 95%min
Supply Ability: 20kg/month
Release date: 2019-12-20

63910-43-0, 4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONERelated Search:

4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE 4-CHLORO-5-METHOXY-2-METHYL-2,3-DIHYDROPYRIDAZIN-3-ONE AKOS B029349 4-CHLORO-5-METHOXY-2-(4-METHYLPHENYL)-3(2H)-PYRIDAZINONE AKOS B029345 AKOS B029249 AKOS B029325 4-CHLORO-5-METHOXY-2-PHENYL-3(2H)-PYRIDAZINONE 4-Chloro-5-ethoxy-2-phenyl-3(2H)-pyridazinone AKOS B029252 AKOS B029338 4-CHLORO-5-ETHOXY-2-METHYL-3(2H)-PYRIDAZINONE AKOS B029329 4-CHLORO-5-ETHOXY-2-(4-METHYLPHENYL)-3(2H)-PYRIDAZINONE AKOS B029339 AKOS B029248 2-BENZYL-4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE 4-CHLORO-2-(3,4-DICHLOROPHENYL)-5-METHOXY-3(2H)-PYRIDAZINONE

4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE

AURORA KA-6685

4-Chloro-2,3-dihydro-5-methoxy-3-oxopyridazine

5-chloro-4-methoxy-1H-pyridazin-6-one

4-Chloro-5-methoxy-3(2<i>H</i>)-pyridazinone

4-chloro-5-methoxy-2,3-dihydropyridazin-3-one

3(2H)-Pyridazinone, 4-chloro-5-methoxy-

4-CHLORO-5-METHOXYPYRIDAZIN-3(2H)-ONE ISO 9001：2015 REACH

63910-43-0

Pyrazines, Pyrimidines & Pyridazines