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L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride

Also known as: H-Asp(OtBu)-OMe hydrochloride, H-Asp(OtBu)-OMe HCl, L-Aspartic acid beta-tert-butyl alpha-methyl ester hydrochloride, 4-O-tert-butyl 1-O-methyl (2S)-2-aminobutanedioate hydrochloride, L-Aspartic acid, 4-(1,1-dimethylethyl) 1-methyl ester, hydrochloride (1:1)

L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride (CAS 2673-19-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H18ClNO4 and a molecular weight of 239.697 g/mol. Key properties include a boiling point of 301.1ºC at 760mmHg and a flash point of 135.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2673-19-0
Jingsj CID
J-1957983-0
Molecular Formula
C9H18ClNO4
Molecular Weight
239.697 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point301.1ºC at 760mmHg
Flash Point135.9ºC
Exact Mass239.092438
PSA78.62000
LogP1.72080
AppearanceSolid
Vapor Pressure0.000807mmHg at 25°C
Storage Conditions2-8°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 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 L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride?

The CAS number of L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride is 2673-19-0.

What are the molecular formula and molecular weight of L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride?

L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride has molecular formula C9H18ClNO4 and molecular weight 239.697 g/mol.

What are the upstream and downstream products of L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride?

For L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride, Upstream Products: Z-L-aspartic acid β-tert-butyl ester α-methyl ester; Downstream Products: Boc-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. "L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride (CAS 2673-19-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1957983-0 (accessed 2026-11-09).

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