Boc-L-phenylalanine benzyl ester

Also known as: Boc-Phe-Obzl, Boc-Phe-OBZ, Boc-Phe-OBZL, Boc-Phe-benzyl ester, N-tert-Butoxycarbonyl-L-phenylalanine benzyl ester, N-tert-butoxycarbonylphenylalanine benzyl ester, Boc-L-phenylalanine benzyl ester, N-alpha-t-Butoxycarbonyl-L-phenylalanine benzyl ester, Boc-phenylalanine-Obzl, Benzyl (2S)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropanoate, (S)-Benzyl 2-((tert-butoxycarbonyl)amino)-3-phenylpropanoate, 2-tert-Butoxycarbonylamino-3-phenylpropionic acid benzyl ester, 2-[[(2-methylpropan-2-yl)oxy-oxomethyl]amino]-3-phenylpropanoic acid (phenylmethyl) ester

Boc-L-phenylalanine benzyl ester (CAS 66617-58-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C21H25NO4 and a molecular weight of 355.42800 g/mol. Key properties include a boiling point of 500.2ºC at 760mmHg, a density of 1.129g/cm3 and a flash point of 256.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 66617-58-1
Jingsj CID: J-1184404-5
Molecular Formula: C₂₁H₂₅NO₄
Molecular Weight: 355.42800 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	500.2ºC at 760mmHg
Density	1.129g/cm3
Flash Point	256.3ºC
Exact Mass	355.17800
PSA	64.63000
LogP	4.25670
Refractive Index	1.547

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-phenylalanine benzyl ester?

The CAS number of Boc-L-phenylalanine benzyl ester is 66617-58-1.

What are the molecular formula and molecular weight of Boc-L-phenylalanine benzyl ester?

Boc-L-phenylalanine benzyl ester has molecular formula C21H25NO4 and molecular weight 355.42800 g/mol.

What are the upstream and downstream products of Boc-L-phenylalanine benzyl ester?

For Boc-L-phenylalanine benzyl ester, Upstream Products: N-(tert-Butoxycarbonyl)-L-phenylalanine, Benzyl alcohol, Benzyl bromide; Downstream Products: L-Phenylalanine benzyl ester hydrochloride.

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-phenylalanine benzyl ester (CAS 66617-58-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1184404-5 (accessed 2026-11-09).

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