Chemical Component Summary | |
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Name | 4-methyl-1H-pyrazole |
Identifiers | 4-methyl-1H-pyrazole |
Formula | C4 H6 N2 |
Molecular Weight | 82.10 |
Type | NON-POLYMER |
Isomeric SMILES | Cc1cn[nH]c1 |
InChI | InChI=1S/C4H6N2/c1-4-2-5-6-3-4/h2-3H,1H3,(H,5,6) |
InChIKey | RIKMMFOAQPJVMX-UHFFFAOYSA-N |
Chemical Details | |
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Formal Charge | 0 |
Atom Count | 12 |
Chiral Atom Count | 0 |
Chiral Atoms | n/a |
Bond Count | 12 |
Aromatic Bond Count | 5 |
Leaving Atoms | n/a |
Drug Info: DrugBank
DrugBank ID | DB01213 Different stereochemistry |
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Name | Fomepizole |
Groups |
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Description | Fomepizole is used as an antidote in confirmed or suspected methanol or ethylene glycol poisoning. Fomepizole is a competitive inhibitor of alcohol dehydrogenase, the enzyme that catalyzes the initial steps in the metabolism of ethylene glycol and methanol to their toxic metabolites. |
Synonyms |
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Brand Names |
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Affected Organism | Humans and other mammals |
Indication | Antizol is indicated as an antidote for ethylene glycol (such as antifreeze) or methanol poisoning, or for use in suspected ethylene glycol or methanol ingestion, either alone or in combination with hemodialysis |
Pharmacology | Fomepizole is a competitive inhibitor of alcohol dehydrogenase, the enzyme that catalyzes the initial steps in the metabolism of ethylene glycol and methanol to their toxic metabolites. Ethylene glycol is first metabolized to glycoaldehyde which then undergoes further oxidation to glycolate, glyoxylate, and oxalate. It is glycolate and oxalate that are primarily responsible for the metabolic acidosis and renal damage that are seen in ethylene glycol poisoning. {01}{03} Methanol is first metabolized to formaldehyde and then undergoes subsequent oxidation via formaldehyde dehydrogenase to become formic acid. It is formic acid that is primarily responsible for the metabolic acidosis and visual disturbances that are associated with methanol poisoning. |
Mechanism of action | Antizol (fomepizole) is a competitive inhibitor of alcohol dehydrogenase. Alcohol dehydrogenase catalyzes the oxidation of ethanol to acetaldehyde. Alcohol dehydrogenase also catalyzes the initial steps in the metabolism of ethylene glycol and methanol to their toxic metabolites. |
Route of administration | Intravenous |
Categories |
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ATC-Code | V03AB34 |
AHFS-Code | 92:00.00 |
CAS number | 7554-65-6 |
Drug Targets
Name | Sequence Search | Pharmacological Action | Actions |
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Alcohol dehydrogenase 1B | MSTAGKVIKCKAAVLWEVKKPFSIEDVEVAPPKAYEVRIKMVAVGICRTD... | yes | inhibitor |
Alcohol dehydrogenase 1A | MSTAGKVIKCKAAVLWELKKPFSIEEVEVAPPKAHEVRIKMVAVGICGTD... | yes | inhibitor |
Alcohol dehydrogenase 1C | MSTAGKVIKCKAAVLWELKKPFSIEEVEVAPPKAHEVRIKMVAAGICRSD... | yes | inhibitor |
Catalase | MADSRDPASDQMQHWKEQRAAQKADVLTTGAGNPVGDKLNVITVGPRGPL... | yes | inhibitor |
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison
T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS.
Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682