N-(tert-Butoxycarbonyl)-L-tyrosine

Also known as: Boc-Tyr-OH, Boc-L-tyrosine, N-tert-butoxycarbonyl-L-tyrosine, N-t-butoxycarbonyl-L-tyrosine, tert-butoxycarbonyl-tyrosine, (2S)-2-[(tert-butoxycarbonyl)amino]-3-(4-hydroxyphenyl)propanoic acid, L-Tyrosine, N-[(1,1-dimethylethoxy)carbonyl]-, MFCD00037179

N-(tert-Butoxycarbonyl)-L-tyrosine (CAS 3978-80-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H19NO5 and a molecular weight of 281.304 g/mol. Key properties include a melting point of 135-140ºC, a boiling point of 484.9±40.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 247.1±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3978-80-1
Jingsj CID: J-10692-3
Molecular Formula: C₁₄H₁₉NO₅
Molecular Weight: 281.304 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	135-140ºC
Boiling Point	484.9±40.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	247.1±27.3 °C
Exact Mass	281.126312
PSA	95.86000
LogP	2.23
Vapor Pressure	0.0±1.3 mmHg at 25°C
Refractive Index	1.550

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.

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)-L-tyrosine?

The CAS number of N-(tert-Butoxycarbonyl)-L-tyrosine is 3978-80-1.

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

N-(tert-Butoxycarbonyl)-L-tyrosine has molecular formula C14H19NO5 and molecular weight 281.304 g/mol.

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

For N-(tert-Butoxycarbonyl)-L-tyrosine, Upstream Products: Di-tert-butyl dicarbonate, L-Tyrosine, Boc-O-benzyl-L-tyrosine; Downstream Products: Methyl L-tyrosinate hydrochloride, Boc-L-tyrosine methyl ester, Benzyl (tert-butoxycarbonyl)-L-tyrosinate.

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)-L-tyrosine (CAS 3978-80-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10692-3 (accessed 2026-11-09).

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