S-(2-Hydroxyethyl)-L-cysteine

S-(2-羟乙基)-L-半胱氨酸

Also known as: (R)-2-Hydroxyethyl-L-cysteine, S-hydroxyethylcysteine, (2R)-2-amino-3-(2-hydroxyethylsulfanyl)propanoic acid, (R)-2-Amino-3-(2-hydroxyethylthio)propionic acid

S-(2-Hydroxyethyl)-L-cysteine (CAS 19179-73-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H11NO3S and a molecular weight of 165.21100 g/mol. It is also known as (R)-2-Hydroxyethyl-L-cysteine, S-hydroxyethylcysteine and (2R)-2-amino-3-(2-hydroxyethylsulfanyl)propanoic acid. Key properties include a boiling point of 379.9ºC at 760 mmHg, a density of 1.362g/cm3 and a flash point of 183.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
19179-73-8
Jingsj CID
J-1502286-4
Molecular Formula
C5H11NO3S
Chinese Name
S-(2-羟乙基)-L-半胱氨酸
Molecular Weight
165.21100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point379.9ºC at 760 mmHg
Density1.362g/cm3
Flash Point183.6ºC

Frequently Asked Questions

What is the CAS number of S-(2-Hydroxyethyl)-L-cysteine?

The CAS number of S-(2-Hydroxyethyl)-L-cysteine is 19179-73-8.

What are the molecular formula and molecular weight of S-(2-Hydroxyethyl)-L-cysteine?

S-(2-Hydroxyethyl)-L-cysteine has molecular formula C5H11NO3S and molecular weight 165.21100 g/mol.

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

Last updated:

How to cite: Jingsj. "S-(2-Hydroxyethyl)-L-cysteine (CAS 19179-73-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1502286-4 (accessed 2026-10-24).

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