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Fmoc-4-methoxy-L-phenylalanine

Also known as: Fmoc-Tyr(Me)-OH, Fmoc-O-methyl-L-tyrosine, Fmoc-L-Tyr(Me), Fmoc-L-Tyr(Me)-OH, Fmoc-Phe(4-OMe)-OH, Fmoc-4-Methoxy-Phe, Fmoc-4-Methoxy-L-Phe-OH, Fmoc-L-4-MeO-Phe-OH, N-Fmoc-O-methyl-L-tyrosine, (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-methoxyphenyl)propanoic acid, Fmoc-p-methoxy-Phe-OH, Fmoc-(O-Me)Tyr-OH, Fmoc-Tyr(OMe)-OH

Fmoc-4-methoxy-L-phenylalanine (CAS 77128-72-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C25H23NO5 and a molecular weight of 417.454 g/mol. Key properties include a melting point of 161 °C, a boiling point of 647.8±55.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 345.6±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
77128-72-4
Jingsj CID
J-1960297-2
Molecular Formula
C25H23NO5
Molecular Weight
417.454 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point161 °C
Boiling Point647.8±55.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point345.6±31.5 °C
Exact Mass417.157623
PSA84.86000
LogP5.32
Vapor Pressure0.0±2.0 mmHg at 25°C
Refractive Index1.620
Storage ConditionsStore at 0°C

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.

Frequently Asked Questions

What is the CAS number of Fmoc-4-methoxy-L-phenylalanine?

The CAS number of Fmoc-4-methoxy-L-phenylalanine is 77128-72-4.

What are the molecular formula and molecular weight of Fmoc-4-methoxy-L-phenylalanine?

Fmoc-4-methoxy-L-phenylalanine has molecular formula C25H23NO5 and molecular weight 417.454 g/mol.

What are the upstream and downstream products of Fmoc-4-methoxy-L-phenylalanine?

For Fmoc-4-methoxy-L-phenylalanine, Upstream Products: 4-Methoxy-L-phenylalanine, Fmoc-OSu, N-Fmoc-3-iodo-L-alanine tert-butyl ester.

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

Last updated:

How to cite: Jingsj. "Fmoc-4-methoxy-L-phenylalanine (CAS 77128-72-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1960297-2 (accessed 2026-11-09).

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