D-Aspartic acid 4-tert-butyl ester

D-天冬氨酸 4-叔丁酯

Also known as: H-D-Asp(OtBu)-OH, D-Aspartic acid beta-tert-butyl ester, D-Aspartic acid 4-(1,1-dimethylethyl) ester, (2R)-2-amino-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid, MFCD08236867

D-Aspartic acid 4-tert-butyl ester (CAS 64960-75-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H15NO4 and a molecular weight of 189.209 g/mol. It is also known as H-D-Asp(OtBu)-OH, D-Aspartic acid beta-tert-butyl ester and D-Aspartic acid 4-(1,1-dimethylethyl) ester. Key properties include a boiling point of 318.7±37.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 146.5±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
64960-75-4
Jingsj CID
J-1038923-6
Molecular Formula
C8H15NO4
Chinese Name
D-天冬氨酸 4-叔丁酯
Molecular Weight
189.209 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point318.7±37.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point146.5±26.5 °C
Exact Mass189.100113
PSA89.62000
LogP0.94
Vapor Pressure0.0±1.5 mmHg at 25°C
Refractive Index1.476
Storage ConditionsStore at 0°C

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 Code2922509090
Summary2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. 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 D-Aspartic acid 4-tert-butyl ester?

The CAS number of D-Aspartic acid 4-tert-butyl ester is 64960-75-4.

What are the molecular formula and molecular weight of D-Aspartic acid 4-tert-butyl ester?

D-Aspartic acid 4-tert-butyl ester has molecular formula C8H15NO4 and molecular weight 189.209 g/mol.

What are the upstream and downstream products of D-Aspartic acid 4-tert-butyl ester?

For D-Aspartic acid 4-tert-butyl ester, Upstream Products: tert-Butyl bromoacetate, Glycine; Downstream Products: Boc-D-Asp(OtBu)-OH.

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

Last updated:

How to cite: Jingsj. "D-Aspartic acid 4-tert-butyl ester (CAS 64960-75-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1038923-6 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.