title: Reaction of S-(2-amino-2-carboxyethylsulfonyl)-L-cysteine with sulfite: synthesis of S-sulfo-L-cysteine and L-alanine 3-sulfinic acid and application to the determination of sulfite.
mesh_terms: D003545:Cysteine / Q000031:analogs & derivatives* / Q000032:analysis / Q000138:chemical synthesis; D008722:Methods; D018377:Neurotransmitter Agents; D009555:Ninhydrin; D013053:Spectrophotometry; D013447:Sulfites / Q000032:analysis*
chemical_list: D018377:Neurotransmitter Agents; D013447:Sulfites; C036581:cystine disulfoxide; C011119:S-sulphocysteine; D009555:Ninhydrin; D003545:Cysteine; C013461:cysteine sulfinic acid