L-Homocystine

L-高胱氨酸

Also known as: (2S,2'S)-4,4'-Dithiobis(2-aminobutanoic acid), (2S,2'S)-4,4'-Disulfanediylbis(2-aminobutanoic acid), (2S,2'S)-4,4'-Disulfanediylbis(2-aMinobutanoic acid), (2S,2'S)-4,4'-Dithiobis(2-aminobutyric acid), (2S,2'S)-4,4'-Dithiobis[2-aMinobutanoic Acid], 4,4'-Dithiobis[(2S)-2-aminobutanoic acid], 4,4'-Dithiobis[(S)-2-aminobutanoic acid], 4,4'-Dithiobis[(S)-2-aminobutyric acid], Butanoic acid, 4,4'-dithiobis[2-amino-, (2S,2'S)-, (H-HoCys-OH)2, H-HoCys-OH, L-Homocystine (8CI), Homocystine, L-, 3,3'-(Dithiobismethylene)bisalanine

L-Homocystine (CAS 626-72-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H16N2O4S2 and a molecular weight of 268.354 g/mol. It is also known as (2S,2'S)-4,4'-Dithiobis(2-aminobutanoic acid), (2S,2'S)-4,4'-Disulfanediylbis(2-aminobutanoic acid) and (2S,2'S)-4,4'-Disulfanediylbis(2-aMinobutanoic acid). Key properties include a melting point of 281-284ºC (dec.), a boiling point of 507.6±50.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 260.8±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
626-72-2
Jingsj CID
J-1992234-0
Molecular Formula
C8H16N2O4S2
Chinese Name
L-高胱氨酸
Molecular Weight
268.354 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point281-284ºC (dec.)
Boiling Point507.6±50.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point260.8±30.1 °C

Frequently Asked Questions

What is the CAS number of L-Homocystine?

The CAS number of L-Homocystine is 626-72-2.

What are the molecular formula and molecular weight of L-Homocystine?

L-Homocystine has molecular formula C8H16N2O4S2 and molecular weight 268.354 g/mol.

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

Last updated:

How to cite: Jingsj. "L-Homocystine (CAS 626-72-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992234-0 (accessed 2026-10-22).

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