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US 2025/0002952 A1Published application
Method for preparing l-cysteic acid
AssigneeWacker Chemie AG
InventorsRupert PFALLER, Thomas SCHLÖSSER, Günter WICH
Life of this patent
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Abstract
Methods and processes for preparing L-cysteic acid. Where according to the process, acetyl-L-serine (OAS) is converted using at least one enzyme selected from the class of O-acetyl-L-serine sulfhydrylases (OAS sulfhydrylases, EC 4.2.99.8) in the presence of a salt of sulfurous acid. Where the OAS sulfhydrylase is CysM and the biotransformation is carried out under active pH control and the OAS concentration in the batch is at least 10 g/L.
Claims15
1-15. (canceled)
A process for producing L-cysteic acid, comprising:
- wherein O-acetyl-L-serine (OAS) is converted using at least one enzyme selected from the class of O-acetyl-L-serine sulfhydrylases (OAS sulfhydrylases, EC 4.2.99.8) in the presence of a salt of sulfurous acid, wherein the OAS sulfhydrylase is CysM and the biotransformation is carried out under active pH control and the OAS concentration in the batch is at least 10 g/L.
Dependencies are inferred from the claim text.