NIST143D

Cystine

NIST^® SRM^® 143d

• Synonym(s): L-Cystine, (R,R)-3,3′-Dithiobis(2-aminopropionicacid)
• Linear Formula: [-SCH₂CH(NH₂)CO₂H]₂
• CAS Number: 56-89-3
• Molecular Weight: 240.30
• Beilstein/REAXYS Number: 1728094
• MDL number: MFCD00064228
• UNSPSC Code: 41116107
• PubChem Substance ID: 329818707
• NACRES: NA.24

Properties

• grade: certified reference material
• Quality Level: 100
• packaging: pkg of 2 g
• manufacturer/tradename: NIST^®
• mp: >240 °C (dec.) (lit.)
• format: neat
• SMILES string: N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O
• InChI: 1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1
• InChI key: LEVWYRKDKASIDU-IMJSIDKUSA-N

Description

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

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.

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable