1-methyl-1H-indole-5-carboxylic acid

1-甲基-1H-吲哚-5-甲酸

Also known as: 1-Methylindole-5-carboxylic acid, 1-Methyl-5-indolecarboxylic acid, 5-Carboxy-1-methyl-1H-indole, N-methylindol-5-carboxylic acid, 1-methyl-1H-indol-5-carboxylic acid

1-methyl-1H-indole-5-carboxylic acid (CAS 186129-25-9) 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 175.184 g/mol. It is also known as 1-Methylindole-5-carboxylic acid, 1-Methyl-5-indolecarboxylic acid and 5-Carboxy-1-methyl-1H-indole. Key properties include a melting point of 221-223.5ºC, a boiling point of 389.0±15.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 189.0±20.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
186129-25-9
Jingsj CID
J-1510535-0
Molecular Formula
C10H9NO2
Chinese Name
1-甲基-1H-吲哚-5-甲酸
Molecular Weight
175.184 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point221-223.5ºC
Boiling Point389.0±15.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point189.0±20.4 °C

Frequently Asked Questions

What is the CAS number of 1-methyl-1H-indole-5-carboxylic acid?

The CAS number of 1-methyl-1H-indole-5-carboxylic acid is 186129-25-9.

What are the molecular formula and molecular weight of 1-methyl-1H-indole-5-carboxylic acid?

1-methyl-1H-indole-5-carboxylic acid has molecular formula C10H9NO2 and molecular weight 175.184 g/mol.

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

Last updated:

How to cite: Jingsj. "1-methyl-1H-indole-5-carboxylic acid (CAS 186129-25-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1510535-0 (accessed 2026-10-25).

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