S-(2-Aminoethyl)-L-cysteine hydrochloride

S-(2-氨基乙基)-L-半胱氨酸盐酸盐

Also known as: S-(2-Aminoethyl)-L-cysteine monohydrochloride, 3-((2-aminoethyl)thio)-, monohydrochloride, l-alanine, L-4-thialysine hydrochloride, Thialysine hydrochloride, S-(β-aminoethyl)-L-cysteine hydrochloride, NSC 186915, H-Cys(aminoethyl)-OH HCl, MFCD00036385, EINECS 223-862-1, lj226, usafxr-43

S-(2-Aminoethyl)-L-cysteine hydrochloride (CAS 4099-35-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H13ClN2O2S and a molecular weight of 200.68700 g/mol. It is also known as S-(2-Aminoethyl)-L-cysteine monohydrochloride, 3-((2-aminoethyl)thio)-, monohydrochloride, l-alanine and L-4-thialysine hydrochloride. Key properties include a boiling point of 341.1ºC at 760 mmHg, a density of 1.289g/cm3 and a flash point of 160.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4099-35-8
Jingsj CID
J-1117212-5
Molecular Formula
C5H13ClN2O2S
Chinese Name
S-(2-氨基乙基)-L-半胱氨酸盐酸盐
Molecular Weight
200.68700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point341.1ºC at 760 mmHg
Density1.289g/cm3
Flash Point160.1ºC

Frequently Asked Questions

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

The CAS number of S-(2-Aminoethyl)-L-cysteine hydrochloride is 4099-35-8.

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

S-(2-Aminoethyl)-L-cysteine hydrochloride has molecular formula C5H13ClN2O2S and molecular weight 200.68700 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-Aminoethyl)-L-cysteine hydrochloride (CAS 4099-35-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1117212-5 (accessed 2026-10-25).

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