(2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride

(R)-2-氨基-4-甲氧基-4-氧代丁酸盐酸盐

Also known as: 4-Methyl hydrogen D-aspartate hydrochloride, D-Aspartic acid beta-methyl ester hydrochloride, (2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride (1:1), 4-Methyl hydrogen D-aspartate HCl, 4-methyl D-aspartate hydrochloride, D-Aspartic acid, 4-methyl ester, hydrochloride (1:1), D-aspartic acid b-methyl ester hydrochloride, EINECS 245-179-8

(2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride (CAS 22728-89-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H10ClNO4 and a molecular weight of 183.590 g/mol. It is also known as 4-Methyl hydrogen D-aspartate hydrochloride, D-Aspartic acid beta-methyl ester hydrochloride and (2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride (1:1). Key properties include a boiling point of 329ºC at 760mmHg and a flash point of 152.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
22728-89-8
Jingsj CID
J-1491651-7
Molecular Formula
C5H10ClNO4
Chinese Name
(R)-2-氨基-4-甲氧基-4-氧代丁酸盐酸盐
Molecular Weight
183.590 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point329ºC at 760mmHg
Flash Point152.8ºC

Frequently Asked Questions

What is the CAS number of (2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride?

The CAS number of (2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride is 22728-89-8.

What are the molecular formula and molecular weight of (2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride?

(2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride has molecular formula C5H10ClNO4 and molecular weight 183.590 g/mol.

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

Last updated:

How to cite: Jingsj. "(2R)-2-Amino-4-methoxy-4-oxobutanoic acid hydrochloride (CAS 22728-89-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1491651-7 (accessed 2026-10-25).

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