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

1,3,5-三甲基-1H-吡唑

Also known as: 1,3,5-Trimethylpyrazole, 1H-Pyrazole, 1,3,5-trimethyl-, 3,5-Dimethyl-N-methylpyrazole, MFCD00015536, Pyrazole, 1,3,5-trimethyl-

1,3,5-Trimethyl-1H-pyrazole (CAS 1072-91-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H10N2 and a molecular weight of 110.157 g/mol. It is also known as 1,3,5-Trimethylpyrazole, 1H-Pyrazole, 1,3,5-trimethyl- and 3,5-Dimethyl-N-methylpyrazole. Key properties include a melting point of 38-41 °C(lit.), a boiling point of 159.1±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 50.0±18.7 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1072-91-9
Jingsj CID
J-4737-1
Molecular Formula
C6H10N2
Chinese Name
1,3,5-三甲基-1H-吡唑
Molecular Weight
110.157 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point38-41 °C(lit.)
Boiling Point159.1±9.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point50.0±18.7 °C

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning

Frequently Asked Questions

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

The CAS number of 1,3,5-Trimethyl-1H-pyrazole is 1072-91-9.

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

1,3,5-Trimethyl-1H-pyrazole has molecular formula C6H10N2 and molecular weight 110.157 g/mol.

Is 1,3,5-Trimethyl-1H-pyrazole hazardous?

1,3,5-Trimethyl-1H-pyrazole has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1,3,5-Trimethyl-1H-pyrazole (CAS 1072-91-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4737-1 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.