1-Methyl-L-tryptophan

1-甲基-L-色氨酸

Also known as: (S)-Indoximod, (S)-2-Amino-3-(1-methyl-1H-indol-3-yl)propanoic acid, L-1-Methyltryptophan, H-Trp(1-Me)-OH, L-Tryptophan, 1-methyl-, MFCD00467133

1-Methyl-L-tryptophan (CAS 21339-55-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H14N2O2 and a molecular weight of 218.252 g/mol. It is also known as (S)-Indoximod, (S)-2-Amino-3-(1-methyl-1H-indol-3-yl)propanoic acid and L-1-Methyltryptophan. Key properties include a melting point of 223-226 ºC, a boiling point of 429.3±35.0 °C at 760 mmHg, a density of 1.28 and a flash point of 213.4±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21339-55-9
Jingsj CID
J-1001719-9
Molecular Formula
C12H14N2O2
Chinese Name
1-甲基-L-色氨酸
Molecular Weight
218.252 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point223-226 ºC
Boiling Point429.3±35.0 °C at 760 mmHg
Density1.28
Flash Point213.4±25.9 °C

Frequently Asked Questions

What is the CAS number of 1-Methyl-L-tryptophan?

The CAS number of 1-Methyl-L-tryptophan is 21339-55-9.

What are the molecular formula and molecular weight of 1-Methyl-L-tryptophan?

1-Methyl-L-tryptophan has molecular formula C12H14N2O2 and molecular weight 218.252 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-L-tryptophan (CAS 21339-55-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1001719-9 (accessed 2026-10-25).

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