S-(4-Fluorophenyl)-L-cysteine

S-(4-氟苯基)-L-半胱氨酸

Also known as: L-Cysteine, S-(4-fluorophenyl)-, 2-amino-3-((4-fluorophenyl)thio)propanoic acid, 2-amino-3-(4-fluorophenyl)sulfanylpropanoic acid, 2-amino-3-[(4-fluorophenyl)thio]propionic acid, 2-azanyl-3-(4-fluorophenyl)sulfanyl-propanoic acid, MFCD02689728

S-(4-Fluorophenyl)-L-cysteine (CAS 331-90-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10FNO2S and a molecular weight of 215.24500 g/mol. It is also known as L-Cysteine, S-(4-fluorophenyl)-, 2-amino-3-((4-fluorophenyl)thio)propanoic acid and 2-amino-3-(4-fluorophenyl)sulfanylpropanoic acid. Key properties include a boiling point of 362.4ºC at 760mmHg, a density of 1.36g/cm3 and a flash point of 173ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
331-90-8
Jingsj CID
J-16904-0
Molecular Formula
C9H10FNO2S
Chinese Name
S-(4-氟苯基)-L-半胱氨酸
Molecular Weight
215.24500 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point362.4ºC at 760mmHg
Density1.36g/cm3
Flash Point173ºC

Frequently Asked Questions

What is the CAS number of S-(4-Fluorophenyl)-L-cysteine?

The CAS number of S-(4-Fluorophenyl)-L-cysteine is 331-90-8.

What are the molecular formula and molecular weight of S-(4-Fluorophenyl)-L-cysteine?

S-(4-Fluorophenyl)-L-cysteine has molecular formula C9H10FNO2S and molecular weight 215.24500 g/mol.

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

Last updated:

How to cite: Jingsj. "S-(4-Fluorophenyl)-L-cysteine (CAS 331-90-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16904-0 (accessed 2026-10-24).

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