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A simple synthesis of L-[35S]cysteine sulfinic acid

✍ Scribed by Ronald M. Spears; David L. Martin

Publisher: John Wiley and Sons
Year: 1981
Tongue: French
Weight: 164 KB
Volume: 18
Category: Article
ISSN: 0022-2135
DOI: 10.1002/jlcr.2580180717

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✦ Synopsis

Abstract

The synthesis of L‐[^35^S]cysteine sulfinic acid (L‐2‐amino‐3‐[^35^S] sulfino‐propanoic acid) in 65% yield from S‐[^35^S]cystine is described. The procedure was designed for use with milligram quantities of starting material and requires no purification of intermediates. L‐[^35^S]Cystine was converted first to its thiosulfonate. Subsequent reaction of the thiosulfonate with ammonium hydroxide generated L‐[^35^S]cysteine sulfinic acid and L‐[^35^S]cystine as the major products. The L‐[^35^S]cystine was recovered and reprocessed thereby increasing the yield.

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