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1-Benzyl-4-iodo-1H-pyrazole

Also known as: 1-Benzyl-4-iodopyrazole, 4-Iodo-1-benzyl-1H-pyrazole, 1H-(N-Benzyl)-4-iodopyrazole, 4-Iodo-1-(phenylmethyl)pyrazole, MFCD04038745, 1H-Pyrazole, 4-iodo-1-(phenylmethyl)-

1-Benzyl-4-iodo-1H-pyrazole (CAS 50877-42-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9IN2 and a molecular weight of 284.096 g/mol. Key properties include a melting point of 63-66°C, a boiling point of 367.1±25.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 175.8±23.2 °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.
50877-42-4
Jingsj CID
J-48585-8
Molecular Formula
C10H9IN2
Molecular Weight
284.096 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point63-66°C
Boiling Point367.1±25.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point175.8±23.2 °C
Exact Mass283.981018
PSA17.82000
LogP3.16
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.668

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 1-Benzyl-4-iodo-1H-pyrazole?

The CAS number of 1-Benzyl-4-iodo-1H-pyrazole is 50877-42-4.

What are the molecular formula and molecular weight of 1-Benzyl-4-iodo-1H-pyrazole?

1-Benzyl-4-iodo-1H-pyrazole has molecular formula C10H9IN2 and molecular weight 284.096 g/mol.

Is 1-Benzyl-4-iodo-1H-pyrazole hazardous?

1-Benzyl-4-iodo-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 1-Benzyl-4-iodo-1H-pyrazole?

For 1-Benzyl-4-iodo-1H-pyrazole, Upstream Products: 4-Iodopyrazole, Benzyl bromide, 1-BENZYL-1H-PYRAZOLE; Downstream Products: 1-Benzyl-4-nitro-1H-pyrazole, 1-Benzyl-1H-pyrazole-4-boronic acid pinacol ester, 1-Benzyl-1H-pyrazole-4-carbaldehyde.

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-Benzyl-4-iodo-1H-pyrazole (CAS 50877-42-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48585-8 (accessed 2026-11-09).

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