1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde

Also known as: 1,3,5-Trimethyl-1H-pyrazole-4-carboxaldehyde, 1,3,5-Trimethylpyrazole-4-carbaldehyde, 4-Formyl-1,3,5-trimethylpyrazole, 1,3,5-Trimethyl-4-formylpyrazole, 1H-Pyrazole-4-carboxaldehyde, 1,3,5-trimethyl-

1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde (CAS 2644-93-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H10N2O and a molecular weight of 138.167 g/mol. Key properties include a melting point of 71 °C, a boiling point of 240.6±35.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 99.3±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2644-93-1
Jingsj CID: J-49512-5
Molecular Formula: C₇H₁₀N₂O
Molecular Weight: 138.167 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	71 °C
Boiling Point	240.6±35.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	99.3±25.9 °C
Exact Mass	138.079315
PSA	34.89000
LogP	0.93
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.537

Customs & Trade Information

HS Code	2933199090
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde?

The CAS number of 1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde is 2644-93-1.

What are the molecular formula and molecular weight of 1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde?

1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde has molecular formula C7H10N2O and molecular weight 138.167 g/mol.

What are the upstream and downstream products of 1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde?

For 1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde, Upstream Products: 1,3,5-Trimethyl-1H-pyrazole, N,N-Dimethylformamide; Downstream Products: 1,3,5-Trimethyl-1H-pyrazole-4-carboxylic acid, (1,3,5-Trimethyl-1H-pyrazol-4-yl)methanol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1,3,5-Trimethyl-1H-pyrazole-4-carbaldehyde (CAS 2644-93-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49512-5 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.