Boc-L-3,5-difluorophenylalanine

Also known as: (2S)-2-[(tert-butoxycarbonyl)amino]-3-(3,5-difluorophenyl)propanoic acid, (2S)-2-[(tert-butoxycarbonyl)amino]-3-(3,5-difluorophenyl)propionic acid, (2S)-2-{[(tert-butoxy)carbonyl]amino}-3-(3,5-difluorophenyl)propanoic acid, (S)-Boc-2-amino-3-(3,5-difluorophenyl)propionic acid, (S)-N-Boc-3,5-difluorophenylalanine, 3,5-Difluoro-N-{[(2-methyl-2-propanyl)oxy]carbonyl}phenylalanine, BOC-L-3,5-DIFLUOROPHE, BOC-L-3,5-DIFLUOROPHENYLALANINE, BOC-PHE(3,5-DIF)-OH, BOC-PHE(3,5-F2)-OH, BOC-PHE(M-F2)-OH, Boc-3,5-difluoro-L-phenylalanine, Boc-L-3,5-Difluoro-phe-OH, Boc-L-Phe(3,5-DiF)-OH, Boc-Phe(3,5-DiF)–OH, Boc-Phe(3,5-F2)-OH, MFCD00797555, N-(tert-Butoxycarbonyl)-3,5-difluoro-L-phenylalanine, N-BOC-3,5-DIFLUORO-L-PHENYLALANINE, N-Boc-L-3,5-difluorophenylalanine

Boc-L-3,5-difluorophenylalanine (CAS 205445-52-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H17F2NO4 and a molecular weight of 301.286 g/mol. Key properties include a boiling point of 417.6±45.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 206.4±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 205445-52-9
Jingsj CID: J-1962360-0
Molecular Formula: C₁₄H₁₇F₂NO₄
Molecular Weight: 301.286 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	417.6±45.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	206.4±28.7 °C
Exact Mass	301.112549
PSA	75.63000
LogP	3.10
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.506
Storage Conditions	Store 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):1793-919.

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 Boc-L-3,5-difluorophenylalanine?

The CAS number of Boc-L-3,5-difluorophenylalanine is 205445-52-9.

What are the molecular formula and molecular weight of Boc-L-3,5-difluorophenylalanine?

Boc-L-3,5-difluorophenylalanine has molecular formula C14H17F2NO4 and molecular weight 301.286 g/mol.

What are the upstream and downstream products of Boc-L-3,5-difluorophenylalanine?

For Boc-L-3,5-difluorophenylalanine, Upstream Products: 3,5-Difluorobenzyl bromide, N-Acetyl-3-(3,5-difluorophenyl)-DL-alanine, Di-tert-butyl dicarbonate; Downstream Products: tert-butyl N-[(1S)-2-(3,5-difluorophenyl)-1-[(2S)-oxiran-2-yl]ethyl]carbamate.

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. "Boc-L-3,5-difluorophenylalanine (CAS 205445-52-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1962360-0 (accessed 2026-11-09).

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