1H-Indazole-5-carbaldehyde

1H-吲唑-5-甲醛

Also known as: 1H-Indazole-5-carboxaldehyde, 5-Formyl-1H-indazole, 5-Formyl indazole, Indazole-5-carboxaldehyde, 1H-indazole-5-carbaldehyd, 1H-Indazole-5-carboxaldehyde (9CI)

1H-Indazole-5-carbaldehyde (CAS 253801-04-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C8H6N2O and a molecular weight of 146.146 g/mol. It is also known as 1H-Indazole-5-carboxaldehyde, 5-Formyl-1H-indazole and 5-Formyl indazole. Key properties include a boiling point of 358.3±15.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 174.4±26.8 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
253801-04-6
Jingsj CID
J-1526135-3
Molecular Formula
C8H6N2O
Chinese Name
1H-吲唑-5-甲醛
Molecular Weight
146.146 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point358.3±15.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point174.4±26.8 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1H-Indazole-5-carbaldehyde?

The CAS number of 1H-Indazole-5-carbaldehyde is 253801-04-6.

What are the molecular formula and molecular weight of 1H-Indazole-5-carbaldehyde?

1H-Indazole-5-carbaldehyde has molecular formula C8H6N2O and molecular weight 146.146 g/mol.

Is 1H-Indazole-5-carbaldehyde hazardous?

1H-Indazole-5-carbaldehyde 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. "1H-Indazole-5-carbaldehyde (CAS 253801-04-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1526135-3 (accessed 2026-10-22).

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