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4-Iodo-3,5-dimethyl-1H-pyrazole

Also known as: 3,5-Dimethyl-4-iodopyrazole, 3,5-Dimethyl-4-iodo-1H-pyrazole, 4-Iodo-3,5-dimethylpyrazole, 1H-Pyrazole, 4-iodo-3,5-dimethyl-, MFCD00040247

4-Iodo-3,5-dimethyl-1H-pyrazole (CAS 2033-45-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H7IN2 and a molecular weight of 222.027 g/mol. Key properties include a melting point of 136-140 °C, a boiling point of 297.3±35.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 133.6±25.9 °C. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H318 — Causes serious eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2033-45-6
Jingsj CID
J-955774-8
Molecular Formula
C5H7IN2
Molecular Weight
222.027 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point136-140 °C
Boiling Point297.3±35.0 °C at 760 mmHg
Density1.9±0.1 g/cm3
Flash Point133.6±25.9 °C
Exact Mass221.965378
PSA28.68000
LogP2.62
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.634

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger
  • H315 — Causes skin irritation
  • H318 — Causes serious eye damage
  • H335 — May cause respiratory irritation

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 4-Iodo-3,5-dimethyl-1H-pyrazole?

The CAS number of 4-Iodo-3,5-dimethyl-1H-pyrazole is 2033-45-6.

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

4-Iodo-3,5-dimethyl-1H-pyrazole has molecular formula C5H7IN2 and molecular weight 222.027 g/mol.

Is 4-Iodo-3,5-dimethyl-1H-pyrazole hazardous?

4-Iodo-3,5-dimethyl-1H-pyrazole has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H318 — Causes serious eye damage; H335 — May cause respiratory irritation.

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

For 4-Iodo-3,5-dimethyl-1H-pyrazole, Upstream Products: 3,5-Dimethylpyrazole, 3,5-Dimethyl-1H-pyrazol-4-amine, 3,5-Dimethyl-4-nitro-1H-pyrazole; Downstream Products: 4-Iodo-1H-pyrazole-3-carboxylic acid, 3,5-Dimethyl-4-nitro-1H-pyrazole, 3-Methyl-4-iodopyrazole.

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

Last updated:

How to cite: Jingsj. "4-Iodo-3,5-dimethyl-1H-pyrazole (CAS 2033-45-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-955774-8 (accessed 2026-11-09).

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