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Z-Tyr-OtBu

Also known as: Z-Tyr-OtBu·H2O, Z-Tyr-OtBu H2O, Cbz-L-tyrosine tert-butyl ester, Cbz-Tyr-O-t-Bu, N-(Benzyloxycarbonyl)-L-tyrosine tert-butyl ester, N-[(Benzyloxy)carbonyl]-L-tyrosine tert-butyl ester, (S)-tert-butyl 2-(benzyloxycarbonylamino)-3-(4-hydroxyphenyl)propanoate, tert-butyl N-[(benzyloxy)carbonyl]-L-tyrosinate, L-Tyrosine, N-[(phenylmethoxy)carbonyl]-, 1,1-dimethylethyl ester, Z-L-Tyrosine tert-butyl ester, Z-L-Tyr-O-tBu, N-alpha-Carbobenzoxy-L-tyrosine tert-butyl ester, Z-L-tyrosinetertutylestermonohydrate, Z-L-tyrosine T-butyl ester hydrate, Z-L-tyrosine-t-butyl ester monohydrate, 2-Methyl-2-propanyl N-[(benzyloxy)carbonyl]-L-tyrosinate

Z-Tyr-OtBu (CAS 16881-33-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C21H25NO5 and a molecular weight of 371.427 g/mol. Key properties include a boiling point of 543.8±50.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 282.7±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16881-33-7
Jingsj CID
J-1987295-8
Molecular Formula
C21H25NO5
Molecular Weight
371.427 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point543.8±50.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point282.7±30.1 °C
Exact Mass371.173279
PSA84.86000
LogP4.49
Vapor Pressure0.0±1.5 mmHg at 25°C
Refractive Index1.563

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 Z-Tyr-OtBu?

The CAS number of Z-Tyr-OtBu is 16881-33-7.

What are the molecular formula and molecular weight of Z-Tyr-OtBu?

Z-Tyr-OtBu has molecular formula C21H25NO5 and molecular weight 371.427 g/mol.

What are the upstream and downstream products of Z-Tyr-OtBu?

For Z-Tyr-OtBu, Upstream Products: tert-Butyl L-tyrosinate, 2-Bromo-2-methylpropane, N-Benzyloxycarbonyl-L-tyrosine; Downstream Products: tert-Butyl L-tyrosinate.

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

Last updated:

How to cite: Jingsj. "Z-Tyr-OtBu (CAS 16881-33-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987295-8 (accessed 2026-11-09).

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