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N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester

Also known as: Z-Asp(OtBu)-OH, Cbz-Asp(OtBu)-OH, Cbz-L-aspartic acid 4-tert-butyl ester, N-Cbz-L-aspartic acid 4-tert-butyl ester, Z-L-aspartic acid 4-tert-butyl ester, 4-tert-butyl hydrogen N-[(phenylmethoxy)carbonyl]-L-aspartate, (2S)-4-[(2-methylpropan-2-yl)oxy]-4-oxo-2-(phenylmethoxycarbonylamino)butanoic acid, L-Aspartic acid, N-[(phenylmethoxy)carbonyl]-, 4-(1,1-dimethylethyl) ester, EINECS 226-912-0, MFCD00042857

N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester (CAS 5545-52-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H21NO6 and a molecular weight of 323.341 g/mol. Key properties include a melting point of 76.7ºC, a boiling point of 513.1±50.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 264.1±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5545-52-8
Jingsj CID
J-853526-0
Molecular Formula
C16H21NO6
Molecular Weight
323.341 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point76.7ºC
Boiling Point513.1±50.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point264.1±30.1 °C
Exact Mass323.136902
PSA101.93000
LogP3.33
Vapor Pressure0.0±1.4 mmHg at 25°C
Refractive Index1.527

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 N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester?

The CAS number of N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester is 5545-52-8.

What are the molecular formula and molecular weight of N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester?

N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester has molecular formula C16H21NO6 and molecular weight 323.341 g/mol.

What are the upstream and downstream products of N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester?

For N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester, Upstream Products: Z-L-aspartic acid β-tert-butyl ester α-methyl ester, tert-Butyl acetate, N-Carbobenzyloxy-L-aspartic acid; Downstream Products: Z-Asp(OtBu)-OSu, 1-Methyl N-Benzyloxycarbonyl-L-aspartate, L-Aspartic acid 4-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. "N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester (CAS 5545-52-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-853526-0 (accessed 2026-11-09).

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