1-methyl-1H-indole-4-carboxylic acid

Also known as: 1-Methyl-4-indolecarboxylic acid, 1-Methylindole-4-carboxylic acid, 4-Carboxy-1-methyl-1H-indole, 1H-Indole-4-carboxylic acid, 1-methyl-

1-methyl-1H-indole-4-carboxylic acid (CAS 90924-06-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9NO2 and a molecular weight of 175.18400 g/mol. Key properties include a melting point of 243-245ºC, a boiling point of 389ºC at 760mmHg, a density of 1.24g/cm3 and a flash point of 189ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 90924-06-4
Jingsj CID: J-1414111-8
Molecular Formula: C₁₀H₉NO₂
Molecular Weight: 175.18400 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	243-245ºC
Boiling Point	389ºC at 760mmHg
Density	1.24g/cm3
Flash Point	189ºC
Exact Mass	175.06300
PSA	42.23000
LogP	1.87650
Refractive Index	1.612

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 1-methyl-1H-indole-4-carboxylic acid?

The CAS number of 1-methyl-1H-indole-4-carboxylic acid is 90924-06-4.

What are the molecular formula and molecular weight of 1-methyl-1H-indole-4-carboxylic acid?

1-methyl-1H-indole-4-carboxylic acid has molecular formula C10H9NO2 and molecular weight 175.18400 g/mol.

What are the upstream and downstream products of 1-methyl-1H-indole-4-carboxylic acid?

For 1-methyl-1H-indole-4-carboxylic acid, Upstream Products: Methyl indole-4-carboxylate, Ethyl 1H-indole-4-carboxylate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1-methyl-1H-indole-4-carboxylic acid (CAS 90924-06-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1414111-8 (accessed 2026-11-09).

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