MilliporeSigma
All Photos(1)

779539

Sigma-Aldrich

L-Cystine

produced by Wacker Chemie AG, Burghausen, Germany, ≥98.5%

Synonym(s):
(R,R)-3,3′-Dithiobis(2-aminopropionicacid)
Linear Formula:
[-SCH2CH(NH2)CO2H]2
CAS Number:
Molecular Weight:
240.30
Beilstein:
1728094
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

grade

produced by Wacker Chemie AG, Burghausen, Germany

assay

≥98.5%

form

powder

optical activity

[α]/D -224 to -218°

reaction suitability

reaction type: solution phase peptide synthesis

impurities

≤0.02% ammonium
≤0.2% ninhidrin positive substances (each)
≤10 ppm heavy metals

ign. residue

≤0.1%

loss

≤0.2% loss on drying

mp

>240 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤200 ppm
sulfate (SO42-): ≤300 ppm

cation traces

As: ≤1 ppm
Fe: ≤10 ppm
Pb: ≤5 ppm

suitability

clear, colorless for appearance of solution

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

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

This product is supplied from Wacker FERMOPURE® material, but is sold for R&D use only, not for drug, household or other uses.
L-Cystine is an amino acid mainly found in the keratin of hair.

Application

L-Cystine can be used as a starting material for the synthesis of d-biotin, aromatic-bridged cystine cyclic peptides (cystinophanes), chiral imidazolidine disulfides and biodegradable PEGylated gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) L-cystine copolymers.

Legal Information

FERMOPURE is a registered trademark of Wacker Chemie AG

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

More Documents

Quotes and Ordering

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service