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M1387

Sigma-Aldrich

4-Methylpyrazole hydrochloride

alcohol dehydrogenase inhibitor

Sinónimos:

Fomepizole

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About This Item

Fórmula empírica (notación de Hill):
C4H6N2 · HCl
Número de CAS:
56010-88-9
Peso molecular:
118.56
MDL number:
MFCD00012707
UNSPSC Code:
12352202
PubChem Substance ID:
24278534
NACRES:
NA.77

biological source

synthetic (organic)

assay

≥95%

form

powder

mp

157-159  °C

solubility

methanol: 100 mg/mL, clear, colorless to yellow

storage temp.

2-8°C

SMILES string

Cl.Cc1cn[nH]c1

InChI

1S/C4H6N2.ClH/c1-4-2-5-6-3-4;/h2-3H,1H3,(H,5,6);1H

InChI key

PUCXJHNDMYZOHG-UHFFFAOYSA-N

Gene Information

human ... ADH1A(124) , ADH1B(125) , ADH1C(126)

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Application

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

Useful as an antidote in methanol and ethylene glycol poisoning.

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.
Alcohol dehydrogenase inhibitor

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Irina Bancos et al.
PloS one, 8(2), e56827-e56827 (2013-03-02)
Classical tumor suppressor genes block neoplasia by regulating cell growth and death. A remarkable puzzle is therefore presented by familial paraganglioma (PGL), a neuroendocrine cancer where the tumor suppressor genes encode subunits of succinate dehydrogenase (SDH), an enzyme of the
Katherine J Lepik et al.
Clinical toxicology (Philadelphia, Pa.), 49(5), 391-401 (2011-07-12)
Little is known about medication errors which occur with the antidotes ethanol and fomepizole, used for treatment of methanol and ethylene glycol poisoning. Study objectives were to describe and compare the frequency, type, outcome and underlying causes of medication errors
Kenneth E McMartin et al.
Clinical toxicology (Philadelphia, Pa.), 50(5), 375-383 (2012-05-05)
Fomepizole, a potent inhibitor of alcohol dehydrogenase, has replaced ethanol as antidote for methanol and ethylene glycol intoxications because of a longer duration of action and fewer adverse effects. Prior human studies have indicated that single doses of fomepizole are
Michael Levine et al.
Annals of emergency medicine, 59(6), 527-531 (2012-01-10)
Ethylene glycol remains an important toxic cause of metabolic acidosis and acute renal failure. Traditionally, inhibition of alcohol dehydrogenase along with hemodialysis has been used for treatment. Because of reported long elimination half-life of ethylene glycol during alcohol dehydrogenase inhibition
Paul G Thomes et al.
Autophagy, 9(1), 63-73 (2012-10-24)
Acute and chronic ethanol administration increase autophagic vacuole (i.e., autophagosome; AV) content in liver cells. This enhancement depends on ethanol oxidation. Here, we used parental (nonmetabolizing) and recombinant (ethanol-metabolizing) Hep G2 cells to identify the ethanol metabolite that causes AV
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