L-Cystine
L-胱氨酸
Also known as: (R,R)-3,3'-Dithiobis(2-aminopropanoic acid), (R,R)-cystine, Dicysteine, Cystine, (-)-Cystine, Oxidized L-cysteine, L-Cysteine disulfide, 3,3'-Dithiodialanine, Cystin, Acetylcysteine Impurity 1, EINECS 200-296-3, MFCD00064228, 3,3'-Disulfanediylbis(2-aminopropanoic acid)
- CAS No.
- 56-89-3
- Jingsj CID
- J-1130822-7
- Molecular Formula
- C6H12N2O4S2
- Chinese Name
- L-胱氨酸
- Molecular Weight
- 240.301 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
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Request a quotePhysicochemical Properties
| Melting Point | 260-261ºC |
|---|---|
| Boiling Point | 468.2±45.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 237.0±28.7 °C |
Frequently Asked Questions
What is the CAS number of L-Cystine?
56-89-3
What are the molecular formula and molecular weight of L-Cystine?
C6H12N2O4S2, molecular weight 240.301 g/mol
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026