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1H-Indole-6-carboxylic acid

Also known as: Indole-6-carboxylic acid, 6-Carboxyindole, 6-Indolecarboxylic acid

1H-Indole-6-carboxylic acid (CAS 1670-82-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7NO2 and a molecular weight of 161.16 g/mol. Key properties include a melting point of 249-253 °C(lit.), a boiling point of 419.6±18.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 207.6±21.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1670-82-2
Jingsj CID
J-19110-6
Molecular Formula
C9H7NO2
Molecular Weight
161.16 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point249-253 °C(lit.)
Boiling Point419.6±18.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point207.6±21.2 °C
Exact Mass161.047684
PSA53.09000
LogP1.82
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.726

Customs & Trade Information

HS Code2933990090
Summary2933990090. 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-Indole-6-carboxylic acid?

The CAS number of 1H-Indole-6-carboxylic acid is 1670-82-2.

What are the molecular formula and molecular weight of 1H-Indole-6-carboxylic acid?

1H-Indole-6-carboxylic acid has molecular formula C9H7NO2 and molecular weight 161.16 g/mol.

What are the upstream and downstream products of 1H-Indole-6-carboxylic acid?

For 1H-Indole-6-carboxylic acid, Upstream Products: Methyl indole-6-carboxylate, Methyl 4-methyl-3-nitrobenzoate, Methyl 4-chloro-3-nitrobenzoate; Downstream Products: Methyl indole-6-carboxylate, Ethyl 1H-indole-6-carboxylate, Methyl 3-cyclohexyl-1H-indole-6-carboxylate.

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-Indole-6-carboxylic acid (CAS 1670-82-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19110-6 (accessed 2026-11-09).

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