ChemicalBook > CAS DataBase List > 1-Methyl-1H-pyrazole-4-carbaldehyde

1-Methyl-1H-pyrazole-4-carbaldehyde

Product Name: 1-Methyl-1H-pyrazole-4-carbaldehyde
CAS No.: 25016-11-9
Chemical Name: 1-Methyl-1H-pyrazole-4-carbaldehyde
Synonyms: 1-METHYL-1H-PYRAZOLE-4-CARBOXALDEHYDE;Pyrazole-4-carboxaldehyde, 1-methyl-;1-Methylpyrazole-4-carbaldehyde;AKOS B000400;AKOS PAO-0259;CHEMBRDG-BB 4301129;IFLAB-BB F2124-0695;TIMTEC-BB SBB000002;ART-CHEM-BB B000400;ASINEX-REAG BAS 00468061
CBNumber: CB9307807
Molecular Formula: C5H6N2O
Formula Weight: 110.11
MOL File: 25016-11-9.mol

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1-Methyl-1H-pyrazole-4-carbaldehyde Property

Melting point:: 29-34 °C
Boiling point:: 60-62°C/0.08mm
Density: 1.14±0.1 g/cm3(Predicted)
Flash point:: >230 °F
storage temp.: Inert atmosphere,2-8°C
pka: 0.17±0.10(Predicted)
form: powder to lump to clear liquid
color: White or Colorless to Yellow to Orange
Sensitive: Air Sensitive
InChI: InChI=1S/C5H6N2O/c1-7-3-5(4-8)2-6-7/h2-4H,1H3
InChIKey: MYFZXSOYJVWTBL-UHFFFAOYSA-N
SMILES: N1(C)C=C(C=O)C=N1
CAS DataBase Reference: 25016-11-9(CAS DataBase Reference)

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Safety

Hazard Codes: Xi
Risk Statements: 37/38-41-43
Safety Statements: 26-36/37/39
WGK Germany: 3
HazardClass: IRRITANT
HS Code: 29331990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H315Causes skin irritation

H317May cause an allergic skin reaction

H318Causes serious eye damage

H335May cause respiratory irritation

Precautionary statements

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 654043
Product name: 1-Methyl-1H-pyrazole-4-carboxaldehyde
Purity: 96%
Packaging: 1g
Price: $39.8
Updated: 2023/06/20

TCI Chemical

Product number: M2372
Product name: 1-Methylpyrazole-4-carboxaldehyde
Purity: >98.0%(GC)
Packaging: 1g
Price: $26
Updated: 2025/07/31

TCI Chemical

Product number: M2372
Product name: 1-Methylpyrazole-4-carboxaldehyde
Purity: >98.0%(GC)
Packaging: 5g
Price: $73
Updated: 2025/07/31

TRC

Product number: M330333
Product name: 1-Methyl-1H-pyrazole-4-carbaldehyde
Packaging: 100mg
Price: $75
Updated: 2021/12/16

SynQuest Laboratories

Product number: 4H15-1-P3
Product name: 1-Methyl-1H-pyrazole-4-carboxaldehyde
Packaging: 5G
Price: $50
Updated: 2021/12/16

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1-Methyl-1H-pyrazole-4-carbaldehyde Chemical Properties,Usage,Production

Uses

1-Methyl-1H-pyrazole-4-carbaldehyde is a pharmaceutical intermediate used in the synthesis of the CHK1 inhibitor MK-8776.

Synthesis

Using cyclopropyl methyl ketone and dimethoxy-N, N-dimethylmethylamine as starting materials, the target product 1-Methyl-1H-pyrazole-4-carbaldehyde was obtained through aldol condensation, hydrazine condensation cyclization, selective methylation reaction and Vilsmeier-Hack reaction in sequence, with a total yield of up to 48.0%.

References

[1] Patent: WO2008/144767, 2008, A1. Location in patent: Page/Page column 117
[2] Patent: EP1762568, 2007, A1. Location in patent: Page/Page column 62
[3] Patent: EP1785418, 2007, A1. Location in patent: Page/Page column 78
[4] Patent: WO2008/153870, 2008, A1. Location in patent: Page/Page column 29
[5] Bioorganic and Medicinal Chemistry Letters, 2011, vol. 21, # 1, p. 471 - 474

1-Methyl-1H-pyrazole-4-carbaldehyde Preparation Products And Raw materials

Raw materials

Preparation Products

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1-Methyl-1H-pyrazole-4-carbaldehyde Suppliers

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View Lastest Price from 1-Methyl-1H-pyrazole-4-carbaldehyde manufacturers

Zhuozhou Wenxi import and Export Co., Ltd

Product: 1-Methyl-1H-pyrazole-4-carbaldehyde 25016-11-9
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-10

Zhuozhou Wenxi import and Export Co., Ltd

Product: 1-Methyl-1H-pyrazole-4-carbaldehyde 25016-11-9
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-09

Zhuozhou Wenxi import and Export Co., Ltd

Product: 1-Methyl-1H-pyrazole-4-carboxaldehyde 25016-11-9
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-06-27

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AKOS PAO-0259

AKOS B000400

IFLAB-BB F2124-0695

CHEMBRDG-BB 4301129

ASINEX-REAG BAS 00468061

ART-CHEM-BB B000400

TIMTEC-BB SBB000002

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25016-11-9

ALDEHYDE

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