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1-Methyl-1H-pyrazole-5-carbonitrile

Also known as: 1-Methyl-5-cyano-1H-pyrazole, 1-Methyl-5-cyanopyrazole, 1-Methylpyrazole-5-carbonitrile, 2-Methyl-2H-pyrazole-3-carbonitrile, 2-Methylpyrazole-3-carbonitrile, 5-Cyano-1-methylpyrazole, 1H-Pyrazole-5-carbonitrile, 1-methyl-

1-Methyl-1H-pyrazole-5-carbonitrile (CAS 66121-72-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5N3 and a molecular weight of 107.11300 g/mol. Key properties include a boiling point of 230.218ºC at 760 mmHg, a density of 1.121 g/cm3 and a flash point of 93.033ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
66121-72-0
Jingsj CID
J-1445961-1
Molecular Formula
C5H5N3
Molecular Weight
107.11300 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point230.218ºC at 760 mmHg
Density1.121 g/cm3
Flash Point93.033ºC
Exact Mass107.04800
PSA41.61000
LogP0.29178

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed

Customs & Trade Information

HS Code2933199090
Summary2933199090. 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-Methyl-1H-pyrazole-5-carbonitrile?

The CAS number of 1-Methyl-1H-pyrazole-5-carbonitrile is 66121-72-0.

What are the molecular formula and molecular weight of 1-Methyl-1H-pyrazole-5-carbonitrile?

1-Methyl-1H-pyrazole-5-carbonitrile has molecular formula C5H5N3 and molecular weight 107.11300 g/mol.

Is 1-Methyl-1H-pyrazole-5-carbonitrile hazardous?

1-Methyl-1H-pyrazole-5-carbonitrile has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of 1-Methyl-1H-pyrazole-5-carbonitrile?

For 1-Methyl-1H-pyrazole-5-carbonitrile, Upstream Products: 1-Methyl-1H-pyrazole-5-carboxamide, Methyl 1-methyl-1H-pyrazole-5-carboxylate; Downstream Products: 1-(1-Methyl-1H-pyrazol-5-yl)ethanone.

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

Last updated:

How to cite: Jingsj. "1-Methyl-1H-pyrazole-5-carbonitrile (CAS 66121-72-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1445961-1 (accessed 2026-11-09).

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