(S)-alpha-Methylaspartic acid-4-tert-butyl ester

2-甲基-L-天冬氨酸 4-叔丁酯

Also known as: (2S)-2-amino-4-(tert-butoxy)-2-methyl-4-oxobutanoic acid, 2-Methyl-L-aspartic acid 4-(1,1-dimethylethyl) ester, α-Me-Asp(OtBu)-OH, alfa-Me-Asp(OtBu)-OH, H-alpha-Me-L-Asp(tBu)-OH, (2S)-2-amino-2-methyl-4-[(2-methyl-2-propanyl)oxy]-4-oxobutanoic acid

(S)-alpha-Methylaspartic acid-4-tert-butyl ester (CAS 1217977-71-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H17NO4 and a molecular weight of 203.23600 g/mol. It is also known as (2S)-2-amino-4-(tert-butoxy)-2-methyl-4-oxobutanoic acid, 2-Methyl-L-aspartic acid 4-(1,1-dimethylethyl) ester and α-Me-Asp(OtBu)-OH. Key property: a density of 1.135±0.06 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1217977-71-3
Jingsj CID
J-1356870-0
Molecular Formula
C9H17NO4
Chinese Name
2-甲基-L-天冬氨酸 4-叔丁酯
Molecular Weight
203.23600 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Density1.135±0.06 g/cm3

Frequently Asked Questions

What is the CAS number of (S)-alpha-Methylaspartic acid-4-tert-butyl ester?

The CAS number of (S)-alpha-Methylaspartic acid-4-tert-butyl ester is 1217977-71-3.

What are the molecular formula and molecular weight of (S)-alpha-Methylaspartic acid-4-tert-butyl ester?

(S)-alpha-Methylaspartic acid-4-tert-butyl ester has molecular formula C9H17NO4 and molecular weight 203.23600 g/mol.

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

Last updated:

How to cite: Jingsj. "(S)-alpha-Methylaspartic acid-4-tert-butyl ester (CAS 1217977-71-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1356870-0 (accessed 2026-10-25).

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