L-Cystine
SIAL/49603 - certified reference material, TraceCERT®
Synonym: (R,R)-3,3′-Dithiobis(2-aminopropionicacid)
CAS Number: 56-89-3
Empirical Formula (Hill Notation): C6H12N2O4S2
Molecular Weight: 240.30
EC Number: 200-296-3
MDL Number: MFCD00064228
Linear Formula: [-SCH2CH(NH2)CO2H]2
Product Type: Chemical
| analyte chemical class(es) | amino acids, peptides, proteins |
| application(s) | cleaning products cosmetics flavors and fragrances food and beverages personal care |
| format | neat |
| grade | TraceCERT® |
| certified reference material | |
| InChI | 1S/C6H12N2O4S2/c7-3(5(9)1 |
| InChI key | LEVWYRKDKASIDU-IMJSIDKUSA |
| mp | >240 °C (dec.) (lit.) |
| product line | TraceCERT® |
| Quality Level | 300  |
| SMILES string | N[C@@H](CSSC[C@H](N)C(O)= |
| storage condition | under inert gas |
| technique(s) | gas chromatography (GC): suitable |
| HPLC: suitable |
| Application: | Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support. |
| General description: | L-Cystine belongs to the amino acid group and is found to be optically active due the presence of chiral centers and a wide range of hydrogen bonding network, which tends to enhance its optical properties. It can serve as an important source of L-cysteine and other sulfur containing amino acids, thus acting like a substitute for L-methionine. |
| General description: | This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to primary material from an NMI, e.g. NIST or NMIJ. Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate. Download your certificate at: http://www.sigma-aldrich. |
| Legal Information: | TraceCERT is a registered trademark of Sigma-Aldrich Co. LLC |
| Packaging: | Bottomless glass bottle. Contents are inside inserted fused cone. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| mp | >240 °C (dec.) (lit.) |
| UNSPSC | 41116107 |