D-Cystine
D-胱氨酸
Also known as: D(+)-Cystine, (R,R)-Cystine, (2R,2'R)-3,3'-disulfanediylbis(2-aminopropanoic acid), (H-D-Cys-OH)2, H-D-Cystine, D-Cystine crystalline, UNII:06681CV9GH, D(+)-3,3'-DITHIOBIS(2-AMINOPROPANOIC ACID), EINECS 206-486-2, MFCD00002610
D-Cystine (CAS 349-46-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H12N2O4S2 and a molecular weight of 240.301 g/mol. It is also known as D(+)-Cystine, (R,R)-Cystine and (2R,2'R)-3,3'-disulfanediylbis(2-aminopropanoic acid). Key properties include a melting point of 260ºC, a boiling point of 468.2±45.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 237.0±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 349-46-2
- Jingsj CID
- J-13099-2
- Molecular Formula
- C6H12N2O4S2
- Chinese Name
- D-胱氨酸
- Molecular Weight
- 240.301 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 260ºC |
|---|---|
| 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 D-Cystine?
The CAS number of D-Cystine is 349-46-2.
What are the molecular formula and molecular weight of D-Cystine?
D-Cystine has molecular formula C6H12N2O4S2 and molecular weight 240.301 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "D-Cystine (CAS 349-46-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13099-2 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.