Fmoc-L-methionine

Also known as: Fmoc-Met-OH, Fmoc-L-Met-OH, Fmoc-Met, Fmoc-methionine, Fmoc-Methionine-OH, N-(9-Fluorenylmethoxycarbonyl)-L-methionine, N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-L-methionine, N-α-Fmoc-L-methionine, N-Fmoc-L-Met, N-Fmoc-Met-OH, FMOC-L-METHIONINE, FMOC-MET, FMOC-L-MET, FMOC-L-MET-OH, MFCD00037134, EINECS 276-258-5

Fmoc-L-methionine (CAS 71989-28-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C20H21NO4S and a molecular weight of 371.450 g/mol. Key properties include a melting point of 121-123 °C(lit.), a boiling point of 614.6±55.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 325.5±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 71989-28-1
Jingsj CID: J-1114368-3
Molecular Formula: C₂₀H₂₁NO₄S
Molecular Weight: 371.450 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	121-123 °C(lit.)
Boiling Point	614.6±55.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	325.5±31.5 °C
Exact Mass	371.119141
PSA	100.93000
LogP	4.59
Vapor Pressure	0.0±1.9 mmHg at 25°C
Refractive Index	1.616

Activity & Biological Data

Additional Information	[1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-1144.

Customs & Trade Information

HS Code	2930909090
Summary	2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Fmoc-L-methionine?

The CAS number of Fmoc-L-methionine is 71989-28-1.

What are the molecular formula and molecular weight of Fmoc-L-methionine?

Fmoc-L-methionine has molecular formula C20H21NO4S and molecular weight 371.450 g/mol.

What are the upstream and downstream products of Fmoc-L-methionine?

For Fmoc-L-methionine, Upstream Products: L-Methionine, Fmoc-OSu, 9-Fluorenylmethyl pentafluorophenyl carbonate; Downstream Products: [Pyr1]-Apelin-13 (human, bovine), L-Methionine, Fmoc-L-methionine pentafluorophenyl ester.

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. "Fmoc-L-methionine (CAS 71989-28-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1114368-3 (accessed 2026-11-09).

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