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Boc-4-Amino-L-phenylalanine

Also known as: (2S)-3-(4-aminophenyl)-2-[(tert-butoxycarbonyl)amino]propanoic acid, Boc-Phe(4-NH2)-OH, 4-Amino-N-(tert-butoxycarbonyl)-L-phenylalanine, L-N-Boc-4-aminophenylalanine, Boc-Phe(4'-NH2)-OH, MFCD00038139, N-α-tert-Butoxycarbonyl-4-amino-L-phenylalanine, 4-Amino-N-[(1,1-dimethylethoxy)carbonyl]-L-phenylalanine

Boc-4-Amino-L-phenylalanine (CAS 55533-24-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H20N2O4 and a molecular weight of 280.320 g/mol. Key properties include a melting point of 126 °C, a boiling point of 484.9±40.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 247.0±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
55533-24-9
Jingsj CID
J-31729-3
Molecular Formula
C14H20N2O4
Molecular Weight
280.320 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point126 °C
Boiling Point484.9±40.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point247.0±27.3 °C
Exact Mass280.142303
PSA101.65000
LogP1.68
Vapor Pressure0.0±1.3 mmHg at 25°C
Refractive Index1.560

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):1793-910.

Frequently Asked Questions

What is the CAS number of Boc-4-Amino-L-phenylalanine?

The CAS number of Boc-4-Amino-L-phenylalanine is 55533-24-9.

What are the molecular formula and molecular weight of Boc-4-Amino-L-phenylalanine?

Boc-4-Amino-L-phenylalanine has molecular formula C14H20N2O4 and molecular weight 280.320 g/mol.

What are the upstream and downstream products of Boc-4-Amino-L-phenylalanine?

For Boc-4-Amino-L-phenylalanine, Upstream Products: 2-((tert-Butoxycarbonyl)amino)-3-(4-nitrophenyl)propanoic acid, Boc-4-nitro-L-phenylalanine, L-Phenylalanine; Downstream Products: Boc-Phe(4-NHZ)-OH, Boc-4-(Fmoc-amino)-L-phenylalanine, Boc-4-azido-L-phenylalanine.

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

Last updated:

How to cite: Jingsj. "Boc-4-Amino-L-phenylalanine (CAS 55533-24-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31729-3 (accessed 2026-11-09).

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