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4-tert-Butyl-L-phenylalanine

Also known as: (S)-2-Amino-3-(4-(tert-butyl)phenyl)propanoic acid, H-Phe(4-tBu)-OH, L-4-tert-Butyl-Phe, 4-(1,1-Dimethylethyl)-L-phenylalanine, MFCD02259528, p-tert-Butylphenylalanine, (2S)-2-amino-3-(4-tert-butylphenyl)propanoic acid, 4-T-BUTYL-L-PHENYLALANINE

4-tert-Butyl-L-phenylalanine (CAS 82372-74-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H19NO2 and a molecular weight of 221.296 g/mol. Key properties include a boiling point of 347.5±30.0 °C at 760 mmHg, a density of 1.084±0.06 g/cm3 and a flash point of 164.0±24.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
82372-74-5
Jingsj CID
J-1392749-6
Molecular Formula
C13H19NO2
Molecular Weight
221.296 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point347.5±30.0 °C at 760 mmHg
Density1.084±0.06 g/cm3
Flash Point164.0±24.6 °C
Exact Mass221.141586
PSA63.32000
LogP2.80
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.538
Storage ConditionsStore at RT.
Additional PropertySlightly soluble (1.9 g/L) (25 ºC)

Customs & Trade Information

HS Code2922499990
SummaryHS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-tert-Butyl-L-phenylalanine?

The CAS number of 4-tert-Butyl-L-phenylalanine is 82372-74-5.

What are the molecular formula and molecular weight of 4-tert-Butyl-L-phenylalanine?

4-tert-Butyl-L-phenylalanine has molecular formula C13H19NO2 and molecular weight 221.296 g/mol.

What are the upstream and downstream products of 4-tert-Butyl-L-phenylalanine?

For 4-tert-Butyl-L-phenylalanine, Upstream Products: Diethyl 2-formamidomalonate, 4-tert-Butylbenzyl chloride, 4-tert-Butylbenzyl bromide; Downstream Products: Fmoc-4-tert-butyl-L-phenylalanine.

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

Last updated:

How to cite: Jingsj. "4-tert-Butyl-L-phenylalanine (CAS 82372-74-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1392749-6 (accessed 2026-11-09).

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