L-Cystine, >=99.0% (T)

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

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Code Description Colour InChI key Manufacturer Form Assay Price Quantity
3589263 L-Cystine, >=99.0% (T) white LEVWYRKDKASIDU-IMJSIDKUSA-N SIGMA-ALDRICH powder or crystals ≥99.7% (TLC)
£111.69 (exc VAT) per 100G
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3589264 L-Cystine, >=99.0% (T) white LEVWYRKDKASIDU-IMJSIDKUSA-N SIGMA-ALDRICH powder or crystals ≥99.7% (TLC)
£38.54 (exc VAT) per 25G
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3589265 L-Cystine, >=99.0% (T) white LEVWYRKDKASIDU-IMJSIDKUSA-N SIGMA-ALDRICH powder or crystals ≥99.7% (TLC)
£419.36 (exc VAT) per 500G
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