1H-Indazole-5-carbaldehyde
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. 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. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 253801-04-6
- Jingsj CID
- J-1526135-5
- Molecular Formula
- C8H6N2O
- Molecular Weight
- 146.146 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 358.3±15.0 °C at 760 mmHg |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 174.4±26.8 °C |
| Exact Mass | 146.048019 |
| PSA | 45.75000 |
| LogP | 1.24 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.747 |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 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 and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1H-Indazole-5-carbaldehyde?
For 1H-Indazole-5-carbaldehyde, Upstream Products: 5-Bromoindazole, N,N-Dimethylformamide, 5-Iodo-1H-indazole; Downstream Products: 3-Iodo-1H-indazole-5-carbaldehyde, 1H-Indazole-5-carbonitrile, 3-Bromo-1H-indazole-5-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. "1H-Indazole-5-carbaldehyde (CAS 253801-04-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1526135-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.