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4-Methylpyrazole hydrochloride

4-Methylpyrazole hydrochloride Structure
4-Methylpyrazole hydrochloride structure
CAS No.
56010-88-9
Chemical Name:
4-Methylpyrazole hydrochloride
Synonyms
Fomepizole HCl;FOMEPIZOLE HYDROCHLORIDE;4-Methylpyrazole hydrochloride;Fomepizole/FomepizolechlorideHCl;4-Methyl-1H-pyrazole hydrochloride;4-Methylpyrazole hydrochloride alcohol dehydrogenase inhibitor
CBNumber:
CB3106840
Molecular Formula:
C4H7ClN2
Molecular Weight:
118.56
MDL Number:
MFCD00012707
MOL File:
56010-88-9.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:51:32
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4-Methylpyrazole hydrochloride Properties

Melting point 157-159 °C
storage temp. 2-8°C
solubility methanol: 100mg/mL, clear, colorless to yellow
form powder
color Purple to purplish red
biological source synthetic (organic)
InChI 1S/C4H6N2.ClH/c1-4-2-5-6-3-4;/h2-3H,1H3,(H,5,6);1H
InChIKey PUCXJHNDMYZOHG-UHFFFAOYSA-N
SMILES Cl.Cc1cn[nH]c1
UNSPSC Code 12352202
NACRES NA.77

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
target organs Respiratory system
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
WGK Germany  3
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

4-Methylpyrazole hydrochloride price More Price(17)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich M1387 4-Methylpyrazole hydrochloride alcohol dehydrogenase inhibitor 56010-88-9 100mg $161 2026-04-30 Buy
Sigma-Aldrich M1387 4-Methylpyrazole hydrochloride alcohol dehydrogenase inhibitor 56010-88-9 1g $948 2026-04-30 Buy
ChemScene CS-0013610 Fomepizole hydrochloride ≥95% 56010-88-9 100mg $62 2026-06-04 Buy
ChemScene CS-0013610 Fomepizole hydrochloride ≥95% 56010-88-9 250mg $107 2026-06-04 Buy
ChemScene CS-0013610 Fomepizole hydrochloride ≥95% 56010-88-9 1g $284 2026-06-04 Buy
Product number Packaging Price Buy
M1387 100mg $161 Buy
M1387 1g $948 Buy
CS-0013610 100mg $62 Buy
CS-0013610 250mg $107 Buy
CS-0013610 1g $284 Buy

4-Methylpyrazole hydrochloride Chemical Properties, Uses, Production

Uses

4-Methylpyrazole hydrochloride has been used:

  • as a cytochrome P450 2E1 inhibitor
  • as cytochrome P450 2E1 and alcohol dehydrogenase inhibitor in 1C11 neural progenitor cells
  • to inhibit ethanol oxidation in VL-17A cells expressing alcohol dehydrogenase and HepG2 cells

Biochem/physiol Actions

4-Methylpyrazole (4MP) inhibits ethanol oxidation in liver microsomes. It also blocks the c-Jun N-terminal kinase (JNK) activation in in vitro liver injury models.

in vivo

Pretreatment with Fomepizole (4-Methylpyrazole; 25 mg/kg; IP) prolongs ethanol neurobehavioral toxicity in CD-1 mice[4]

Animal Model:Male CD-1 mice weighing 18-25 g[4]
Dosage:25 mg/kg
Administration:IP; single dose
Result:Decreased the dose of ethanol (1-5 g/kg; IP) at which 50% of the animals failed a particular outcome test (toxic dose 50; TD50).

IC 50

CYP2E1

4-Methylpyrazole hydrochloride Preparation Products And Raw materials

Raw materials

Preparation Products

4-Methylpyrazole hydrochloride Suppliers

Global Suppliers ( 37)
Supplier Tel Email Country ProdList Advantage
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771 sales@heowns.com China 14412 57
Spectrum Chemical Manufacturing Corp. 021-021-021-67601398-809-809-809 15221380277 marketing_china@spectrumchemical.com China 9643 60
SynAsst Chemical. 021-60343070 China 12731 55
Guangzhou Isun Pharmaceutical Co., Ltd 020-39119399 18927568969 isunpharm@qq.com China 4773 55
Sigma-Aldrich 021-61415566 800-8193336 orderCN@merckgroup.com China 51389 80
Shanghai YuanYe Biotechnology Co., Ltd. 15026964105 2881489226@qq.com China 89667 60
Guangzhou Younan Technology Co., Ltd 020-82000279 18988941452 YN_research@163.com China 2984 58
Energy Chemical 021-58432009 400-005-6266 marketing@energy-chemical.com China 44871 58
ChengDu SinoStandards Bio-Tech Co.,Ltd. ， 028-83243028 19136088901 sinostandards@163.com China 4979 58
Bide Pharmatech Ltd. 400-1647117 13681763483 product02@bidepharm.com China 59929 58
Supplier Advantage
Tianjin heowns Biochemical Technology Co., Ltd. 57
Spectrum Chemical Manufacturing Corp. 60
SynAsst Chemical. 55
Guangzhou Isun Pharmaceutical Co., Ltd 55
Sigma-Aldrich 80
Shanghai YuanYe Biotechnology Co., Ltd. 60
Guangzhou Younan Technology Co., Ltd 58
Energy Chemical 58
ChengDu SinoStandards Bio-Tech Co.,Ltd. ， 58
Bide Pharmatech Ltd. 58

View Latest Price from 4-Methylpyrazole hydrochloride manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Fomepizole hydrochloride pictures 2026-07-15 Fomepizole hydrochloride
56010-88-9
 $1520.00-2500.00 10g TargetMol Chemicals Inc.

4-Methylpyrazole hydrochloride Spectrum

4-METHYLPYRAZOLE HYDROCHLORIDE(56010-88-9)Raman

56010-88-9 (4-Methylpyrazole hydrochloride) Related Search:

5-Chloro-1-methyl-3-(trifluoromethyl)pyrazole-4-carboxaldehyde 2-(4-Chlorophenyl)-3-(trifluoromethyl)pyrazole-4-carbonyl chloride 5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde 1-Phenyl-5-(trifluoromethyl)pyrazole-4-carbonyl chloride 1-(4-Chlorophenyl)-5-propyl-1H-pyrazole-4-carboxylic acid
4-Methylpyrazole 5-Chloro-1,3-dimethyl-1H-pyrazole-4-carbaldehyde Dichlorosulfophenyl-3-methylpyrazolone 5-Amino-1-(4-chlorophenyl)-1H-pyrazole-4-carbonitrile (-)-Quinpirole hydrochloride
Ethyl 1-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate 2-(4-Chlorophenyl)-3-(trifluoromethyl)pyrazole-4-carboxylic acid 1-(3-Chlorophenyl)-5-(1H-pyrrol-1-yl)-1H-pyrazole-4-carbonitrile 4-Methylpyrazole hydrochloride 5-Amino-1-(2,4-dichlorophenyl)-1H-pyrazole-4-carbonitrile
5-Amino-1-(3-chloro-4-fluorophenyl)-4-cyanopyrazole 2-(4-Chlorophenyl)-3-(trifluoromethyl)pyrazole-4-carboxylic acid hydrazide 5-Chloro-3-[2-(dimethylamino)-1-formylvinyl]-1-phenyl-1H-pyrazole-4-carboxaldehyde

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FOMEPIZOLE HYDROCHLORIDE Fomepizole/FomepizolechlorideHCl 4-Methyl-1H-pyrazole hydrochloride 4-Methylpyrazole hydrochloride alcohol dehydrogenase inhibitor Fomepizole HCl 4-Methylpyrazole hydrochloride 56010-88-9 A to C Biochemicals and Reagents BioChemical Alcohol dehydrogenase human Enzyme Inhibitors Enzymes, Inhibitors, and Substrates Enzyme Inhibitors by Enzyme