Cystine
SIAL/NIST143D - NIST® SRM® 143d
Synonym: L-Cystine; (R,R)-3,3′-Dithiobis(2-aminopropionicacid)
CAS Number: 56-89-3
Empirical Formula (Hill Notation): C6H12N2O4S2
Molecular Weight: 240.30
MDL Number: MFCD00064228
Linear Formula: [-SCH2CH(NH2)CO2H]2
Product Type: Chemical
| format | neat |
| grade | certified reference material |
| InChI | 1S/C6H12N2O4S2/c7-3(5(9)1 |
| InChI key | LEVWYRKDKASIDU-IMJSIDKUSA |
| manufacturer/tradename | NIST® |
| mp | >240 °C (dec.) (lit.) |
| packaging | pkg of 2 g |
| Quality Level | 100  |
| SMILES string | N[C@@H](CSSC[C@H](N)C(O)= |
| General description: | This Standard Reference Material (SRM) is intended primarily for use in validating microchemical procedures for the determination of carbon, hydrogen, nitrogen, and sulfur in organic matter. SRM 143d is pure crystalline cystine supplied in a 2 g unit size. For more information, please refer to the SDS and COA. SRM 143D_cert  SRM 143D_SDS |
| Legal Information: | NIST is a registered trademark of National Institute of Standards and Technology |
| Legal Information: | SRM is a registered trademark of National Institute of Standards and Technology |
| Other Notes: | Certified for the analytes listed below. Carbon (C), Hydrogen (H), Nitrogen (N), Oxygen (O), Sulfur (S), Cystine (C6H12N2O4S2) See certificate for values and more details at nist.gov/SRM. |
| 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 |