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NIST143D

Cystine

NIST® SRM® 143d

Synonym(s):

L-Cystine, (R,R)-3,3′-Dithiobis(2-aminopropionic acid)

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About This Item

Linear Formula:
[-SCH2CH(NH2)CO2H]2
CAS Number:
56-89-3
Molecular Weight:
240.30
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329818707
MDL number:
MFCD00064228
Beilstein/REAXYS Number:
1728094

Key Documents

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Product Name

Cystine, NIST® SRM® 143d

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

SMILES string

N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O

InChI key

LEVWYRKDKASIDU-IMJSIDKUSA-N

grade

certified reference material

packaging

pkg of 2 g

manufacturer/tradename

NIST®

mp

>240 °C (dec.) (lit.)

format

neat

Quality Level

100

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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.

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

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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