(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpropanoic acid

(S)-3-(Fmoc-氨基)-2-甲基丙酸

Also known as: Fmoc-S-3-aminoisobutyric acid, Fmoc-(S)-3-amino-2-methylpropanoic acid, Fmoc-β2-HomoAla-OH, (S)-Fmoc-β2-homoalanine, Fmoc-S-AMPA-OH, (S)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-2-methylpropionic acid, (S)-3-(((9H-fluoren-9-yl)methoxy)carbonylamino)-2-methylpropanoic acid

(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpropanoic acid (CAS 203854-58-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C19H19NO4 and a molecular weight of 325.35800 g/mol. It is also known as Fmoc-S-3-aminoisobutyric acid, Fmoc-(S)-3-amino-2-methylpropanoic acid and Fmoc-β2-HomoAla-OH. Key properties include a boiling point of 555.3ºC at 760 mmHg, a density of 1.255g/cm3 and a flash point of 289.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 203854-58-4
Jingsj CID: J-1084966-4
Molecular Formula: C₁₉H₁₉NO₄
Chinese Name: (S)-3-(Fmoc-氨基)-2-甲基丙酸
Molecular Weight: 325.35800 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	555.3ºC at 760 mmHg
Density	1.255g/cm3
Flash Point	289.6ºC

Frequently Asked Questions

What is the CAS number of (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpropanoic acid?

The CAS number of (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpropanoic acid is 203854-58-4.

What are the molecular formula and molecular weight of (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpropanoic acid?

(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpropanoic acid has molecular formula C19H19NO4 and molecular weight 325.35800 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-methylpropanoic acid (CAS 203854-58-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1084966-4 (accessed 2026-10-25).

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