5-Methoxyindole-3-acetic acid

5-甲氧基吲哚-3-乙酸

Also known as: 5-Methoxy-3-indoleacetic acid, 2-(5-Methoxy-1H-indol-3-yl)acetic acid, 2-(5-Methoxy-3-indolyl)acetic acid, 5-Methoxyindol-3-ylacetic acid, 5-Methoxy-1H-indole-3-acetic acid, 5-Methoxyindoleacetic acid, Methoxyindoleacetic acid, 5-MeO-IAA, 5-Methoxy-IAA, RARECHEM AL BO 1466, TIMTEC-BB SBB003497, MFCD00005638

5-Methoxyindole-3-acetic acid (CAS 3471-31-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11NO3 and a molecular weight of 205.21000 g/mol. It is also known as 5-Methoxy-3-indoleacetic acid, 2-(5-Methoxy-1H-indol-3-yl)acetic acid and 2-(5-Methoxy-3-indolyl)acetic acid. Key properties include a melting point of 145-148 °C (dec.)(lit.), a boiling point of 445.9ºC at 760 mmHg and a flash point of 223.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3471-31-6
Jingsj CID
J-11748-1
Molecular Formula
C11H11NO3
Chinese Name
5-甲氧基吲哚-3-乙酸
Molecular Weight
205.21000 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point145-148 °C (dec.)(lit.)
Boiling Point445.9ºC at 760 mmHg
Flash Point223.5ºC

Frequently Asked Questions

What is the CAS number of 5-Methoxyindole-3-acetic acid?

The CAS number of 5-Methoxyindole-3-acetic acid is 3471-31-6.

What are the molecular formula and molecular weight of 5-Methoxyindole-3-acetic acid?

5-Methoxyindole-3-acetic acid has molecular formula C11H11NO3 and molecular weight 205.21000 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Methoxyindole-3-acetic acid (CAS 3471-31-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11748-1 (accessed 2026-10-22).

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