L-Cystine, >=99.0% (T)

Code: 30200-25g D2-231

Not available outside of the UK & Ireland.

Application

L-Cystine has been used to prepare stock solution which in turn is utilized for determining the L-cysteine and L-cystine in pharmaceutical preparations as well as...


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$30.89 25G
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Not available outside of the UK & Ireland.

Application

L-Cystine has been used to prepare stock solution which in turn is utilized for determining the L-cysteine and L-cystine in pharmaceutical preparations as well as in urine samples by using spectrofluorimetric flow injection method.

Biochem/physiol Actions

Cystine is required for the synthesis of glutathione that protects the cells from oxidative stress. A specific x(c)-cysteine/glutamate antiporter mediates cellular uptake of cysteine in exchange for glutamate. Inhibition of cysteine uptake induces toxicity in neuronal cells.

Other Notes

Preparation of N,N′-dibenzoyl-L-cystine, an efficient auxiliary for enantioselective reductions of ketones

anion traceschloride (Cl-): ≤500 mg/kg, sulfate (SO42-): ≤100 mg/kg
application(s)peptide synthesis
assay≥99.7% (TLC)
cation tracesK: ≤50 mg/kg, Na: ≤150 mg/kg, Cu: ≤6 mg/kg, Cr: ≤5 mg/kg, Mn: ≤5 mg/kg, Fe: ≤10 mg/kg, Mg: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg, Ni: ≤5 mg/kg, Cd: ≤5 mg/kg, Ca: ≤50 mg/kg, Co: ≤5 mg/kg
colorwhite
formpowder or crystals
ign. residue≤0.1% (as SO4)
InChI keyLEVWYRKDKASIDU-IMJSIDKUSA-N
InChI1S/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
loss≤0.1% loss on drying
mp>240 °C (dec.) (lit.)
optical activity[α]20/D −219±5°, c = 1% in 1 M HCl
Quality Level200
SMILES stringN[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O
solubility1 M HCl: 0.5 g/10 mL, clear, colorless
Code
Description
Unit Size
List Price
Qty
30200-100G
L-Cystine, >=99.0% (T)

Unit:100G
List Price: $89.32
Source:List Price
ADD
30200-500G
L-Cystine, >=99.0% (T)

Unit:500G
List Price: $334.95
Source:List Price
ADD
Cas Number56-89-3
This product has met the following criteria: