L-Cystine, >=99.0% (T)
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
| Colour | white |
|---|---|
| InChI key | LEVWYRKDKASIDU-IMJSIDKUSA-N |
| Manufacturer | SIGMA-ALDRICH |
| Form | powder or crystals |
| Assay | ≥99.7% (TLC) |
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