N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine

Also known as: Boc-Phe(4-Br)-OH, Boc-4-bromo-L-phenylalanine, Boc-L-4-bromophenylalanine, N-α-tert-Butoxycarbonyl-L-4-bromophenylalanine, 4-Bromo-N-{[(2-methyl-2-propanyl)oxy]carbonyl}-L-phenylalanine, (2S)-3-(4-Bromophenyl)-2-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)propanoic acid, Boc-p-bromo-L-phenylalanine, Boc-Phe(p-Br)-OH, MFCD00237571

N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine (CAS 62129-39-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H18BrNO4 and a molecular weight of 344.201 g/mol. Key properties include a melting point of 118ºC, a boiling point of 475.3±40.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 241.2±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 62129-39-9
Jingsj CID: J-31731-7
Molecular Formula: C₁₄H₁₈BrNO₄
Molecular Weight: 344.201 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	118ºC
Boiling Point	475.3±40.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	241.2±27.3 °C
Exact Mass	343.041901
PSA	75.63000
LogP	3.73
Vapor Pressure	0.0±1.2 mmHg at 25°C
Refractive Index	1.551

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):1793-904.

Customs & Trade Information

HS Code	2924299090
Summary	2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. 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 N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine?

The CAS number of N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine is 62129-39-9.

What are the molecular formula and molecular weight of N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine?

N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine has molecular formula C14H18BrNO4 and molecular weight 344.201 g/mol.

What are the upstream and downstream products of N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine?

For N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine, Upstream Products: Di-tert-butyl dicarbonate, 4-Bromo-L-phenylalanine; Downstream Products: Boc-(S)-3-amino-4-(4-bromophenyl)-butyric acid, Boc-L-4-bromophenylalaninol, (S)-3-Amino-4-(4-bromophenyl)butanoic acid.

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. "N-(tert-Butoxycarbonyl)-4-bromo-L-phenylalanine (CAS 62129-39-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31731-7 (accessed 2026-11-09).

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