4-Methylpyrazole - Moligand™, 10mM in DMSO , CAS No.7554-65-6

CAS: 7554-65-6 Cat. No.: M425841 Molecular Weight: 82.11 Beilstein Registry Number: 105204 EC Number: 231-445-0

GRADE & PURITY Moligand™, 10mM in DMSO

Synonyms

4-Methylpyrazole|fomepizole|4-Methyl-1H-pyrazole|7554-65-6|Antizol|1H-Pyrazole, 4-methyl-|4-Methylpyrazol|Fomepizol|Fomepizolum|Antizol-vet|Fomepizol [INN-Spanish]|Fomepizolum [INN-Latin]|4-methyl pyrazole|4-MP|PYRAZOLE, 4-METHYL-|CHEBI:5141|UNII-83LCM6L2

Storage

Store at -80°C

Shipped In

Dry ice packs + Cold packs

Overview

4-Methylpyrazole inhibits CYP2E1 activity. It also acts as alcohol dehydrogenase inhibitor.

Specifications

Synonyms

4-Methylpyrazole | fomepizole | 4-Methyl-1H-pyrazole | 7554-65-6 | Antizol | 1H-Pyrazole, 4-methyl- | 4-Methylpyrazol | Fomepizol | Fomepizolum | Antizol-vet | Fomepizol [INN-Spanish] | Fomepizolum [INN-Latin] | 4-methyl pyrazole | 4-MP | PYRAZOLE, 4-METHYL- | CHEBI:5141 | UNII-83LCM6L2

Specifications & Purity

Moligand™, 10mM in DMSO

Biochemical and Physiological Mechanisms

Alcohol dehydrogenase inhibitor

Storage

Store at -80°C

Shipped In

Dry ice packs + Cold packs

This product requires cold chain shipping. Ground and other economy services are not available.

Grade

Moligand™

Action Type

INHIBITOR

Names and Identifiers

• Canonical Smiles: CC1=CNN=C1
• IUPAC Name: 4-methyl-1H-pyrazole
• InChIKey: RIKMMFOAQPJVMX-UHFFFAOYSA-N
• INCHI: 1S/C4H6N2/c1-4-2-5-6-3-4/h2-3H,1H3,(H,5,6)
• Isomeric SMILES: CC1=CNN=C1
• WGK Germany: 3
• RTECS: UQ7350000
• Molecular Weight: 82.11
• Beilstein: 105204
• Reaxy-Rn: 105204
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=105204&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organoheterocyclic compounds
    • Class Azoles
      • Subclass Pyrazoles

• Kingdom: Organic compounds
• Superclass: Organoheterocyclic compounds
• Class: Azoles
• Subclass: Pyrazoles
• Intermediate Tree Nodes: Not available
• Direct Parent: Pyrazoles
• Alternative Parents: Heteroaromatic compounds Azacyclic compounds Organopnictogen compounds Organonitrogen compounds Hydrocarbon derivatives
• Molecular Framework: Aromatic heteromonocyclic compounds
• Substituents: Heteroaromatic compound - Pyrazole - Azacycle - Organic nitrogen compound - Organopnictogen compound - Hydrocarbon derivative - Organonitrogen compound - Aromatic heteromonocyclic compound
• Description: This compound belongs to the class of organic compounds known as pyrazoles. These are compounds containing a pyrazole ring, which is a five-member aromatic ring with two nitrogen atoms (at positions 1 and 2) and three carbon atoms.
• External Descriptors: a small molecule

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Associated Targets(Human)

PDE5A Tclin Phosphodiesterase 5A (5113 Activities)

Discover Target: PDE5A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

EGFR Tclin Epidermal growth factor receptor erbB1 (33727 Activities)

Discover Target: EGFR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CA2 Tclin Carbonic anhydrase II (17698 Activities)

Discover Target: CA2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ESR1 Tclin Estrogen receptor alpha (17718 Activities)

Discover Target: ESR1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HMGCR Tclin HMG-CoA reductase (2475 Activities)

Discover Target: HMGCR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

NR3C1 Tclin Glucocorticoid receptor (14987 Activities)

Discover Target: NR3C1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

INSR Tclin Insulin receptor (5558 Activities)

Discover Target: INSR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PGR Tclin Progesterone receptor (8562 Activities)

Discover Target: PGR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRB2 Tclin Beta-2 adrenergic receptor (11824 Activities)

Discover Target: ADRB2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CHRM2 Tclin Muscarinic acetylcholine receptor M2 (10671 Activities)

Discover Target: CHRM2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRB1 Tclin Beta-1 adrenergic receptor (6630 Activities)

Discover Target: ADRB1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR1A Tclin Serotonin 1a (5-HT1a) receptor (14969 Activities)

Discover Target: HTR1A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA2A Tclin Alpha-2a adrenergic receptor (9450 Activities)

Discover Target: ADRA2A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AR Tclin Androgen Receptor (11781 Activities)

Discover Target: AR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CHRM1 Tclin Muscarinic acetylcholine receptor M1 (12690 Activities)

Discover Target: CHRM1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ACE Tclin Angiotensin-converting enzyme (1423 Activities)

Discover Target: ACE

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DRD2 Tclin Dopamine D2 receptor (23596 Activities)

Discover Target: DRD2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

GABRA1 Tclin GABA receptor alpha-1 subunit (399 Activities)

Discover Target: GABRA1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MAOA Tclin Monoamine oxidase A (11911 Activities)

Discover Target: MAOA

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CNR1 Tclin Cannabinoid CB1 receptor (20913 Activities)

Discover Target: CNR1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DRD1 Tclin Dopamine D1 receptor (9720 Activities)

Discover Target: DRD1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DRD4 Tchem Dopamine D4 receptor (7907 Activities)

Discover Target: DRD4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ACHE Tclin Acetylcholinesterase (18204 Activities)

Discover Target: ACHE

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PTGS1 Tclin Cyclooxygenase-1 (9233 Activities)

Discover Target: PTGS1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SLC6A2 Tclin Norepinephrine transporter (10102 Activities)

Discover Target: SLC6A2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HRH2 Tclin Histamine H2 receptor (5428 Activities)

Discover Target: HRH2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA1D Tclin Alpha-1d adrenergic receptor (4171 Activities)

Discover Target: ADRA1D

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR1B Tclin Serotonin 1b (5-HT1b) receptor (2801 Activities)

Discover Target: HTR1B

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR2A Tclin Serotonin 2a (5-HT2a) receptor (14758 Activities)

Discover Target: HTR2A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR2C Tclin Serotonin 2c (5-HT2c) receptor (11471 Activities)

Discover Target: HTR2C

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AVPR2 Tclin Vasopressin V2 receptor (2912 Activities)

Discover Target: AVPR2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADORA1 Tclin Adenosine A1 receptor (17603 Activities)

Discover Target: ADORA1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AGTR1 Tclin Type-1 angiotensin II receptor (5176 Activities)

Discover Target: AGTR1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CALCR Tclin Calcitonin receptor (2215 Activities)

Discover Target: CALCR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SLC6A4 Tclin Serotonin transporter (12625 Activities)

Discover Target: SLC6A4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA1A Tclin Alpha-1a adrenergic receptor (8359 Activities)

Discover Target: ADRA1A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PTGS2 Tclin Cyclooxygenase-2 (13999 Activities)

Discover Target: PTGS2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HRH1 Tclin Histamine H1 receptor (7573 Activities)

Discover Target: HRH1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA1B Tclin Alpha-1b adrenergic receptor (2912 Activities)

Discover Target: ADRA1B

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

OPRM1 Tclin Mu opioid receptor (19785 Activities)

Discover Target: OPRM1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DRD3 Tclin Dopamine D3 receptor (14368 Activities)

Discover Target: DRD3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AVPR1A Tclin Vasopressin V1a receptor (5412 Activities)

Discover Target: AVPR1A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

OPRD1 Tclin Delta opioid receptor (15096 Activities)

Discover Target: OPRD1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

OPRK1 Tclin Kappa opioid receptor (16155 Activities)

Discover Target: OPRK1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR3A Tclin Serotonin 3a (5-HT3a) receptor (3366 Activities)

Discover Target: HTR3A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SLC6A3 Tclin Dopamine transporter (10535 Activities)

Discover Target: SLC6A3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

GRIN1 Tclin Glutamate (NMDA) receptor subunit zeta 1 (122 Activities)

Discover Target: GRIN1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

KCNH2 Tclin HERG (29587 Activities)

Discover Target: KCNH2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR4 Tclin Serotonin 4 (5-HT4) receptor (2068 Activities)

Discover Target: HTR4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CACNA1C Tclin Voltage-gated L-type calcium channel alpha-1C subunit (766 Activities)

Discover Target: CACNA1C

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Associated Targets(non-human)

Agtr2 Angiotensin II type 2 (AT-2) receptor (803 Activities)

Discover Target: Agtr2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mc4r Melanocortin receptor 4 (1205 Activities)

Discover Target: Mc4r

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Ltc4s Leukotriene C4 synthase (1 Activities)

Discover Target: Ltc4s

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Sigmar1 Sigma opioid receptor (160 Activities)

Discover Target: Sigmar1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Npy1r Neuropeptide Y receptor type 1 (8 Activities)

Discover Target: Npy1r

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Cckar Cholecystokinin A receptor (90 Activities)

Discover Target: Cckar

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Pde4d Phosphodiesterase 4D (4 Activities)

Discover Target: Pde4d

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Nos2 Nitric oxide synthase, inducible (3573 Activities)

Discover Target: Nos2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mapk1 MAP kinase ERK2 (650 Activities)

Discover Target: Mapk1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mmp9 Matrix metalloproteinase 9 (38 Activities)

Discover Target: Mmp9

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Rattus norvegicus (775804 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

GCN5 Histone acetyltransferase GCN5 (89 Activities)

Discover Target: GCN5

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

rep Replicase polyprotein 1ab (378 Activities)

Discover Target: rep

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

pfk 6-phospho-1-fructokinase (7870 Activities)

Discover Target: pfk

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Glra2 Glycine receptor (1745 Activities)

Discover Target: Glra2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mechanisms of Action

Chemical and Physical Properties

• Sensitivity: air sensitive
• Refractive Index: 1.5
• Flash Point(°F): 204.8 °F
• Flash Point(°C): 96 °C
• Boil Point(°C): 99-100°C/6mmHg
• Melt Point(°C): 13°C
• Molecular Weight: 82.100 g/mol
• XLogP3: 1.400
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 0
• Exact Mass: 82.0531 Da
• Monoisotopic Mass: 82.0531 Da
• Topological Polar Surface Area: 28.700 Ų
• Heavy Atom Count: 6
• Formal Charge: 0
• Complexity: 44.800
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

References

1. Kezhuo Zhang, Qian Wang, Yaqian Zhou, Jiajun Gao, Chunxi Li, Xingmao Jiang.  (2020)  A low-cost crosslinked polystyrene derived from environmental wastes for adsorption of phenolic compounds from aqueous solution.  JOURNAL OF MOLECULAR LIQUIDS,      [PMID:] [10.1016/j.molliq.2020.113641]

2. Fang Cheng-Dong, Huang Ying, Sun Yi-Fan, Sun Peng-Fei, Li Ke, Yao Shu-Yang, Zhang Min-Yi, Fang Wei-Hui, Chen Jia-Jia.  (2024)  Revealing and reconstructing the 3D Li-ion transportation network for superionic poly(ethylene) oxide conductor.  Nature Communications,  15  (1): (1-11).  [PMID:39117642] [10.1038/s41467-024-51191-2]

3. Guo-Shan Zhu, Ren-Jie Hui, Jun Hu.  (2025)  Microdroplet Stabilization Enabled Direct Mass Spectrometric Identification of Electrogenerated Transient Carbocation Intermediates.  Advanced Science,      [PMID:41355586] [10.1002/advs.202518157]