Amoxicillin EP Impurity E Catalogue A536305 CAS 1356020-01-3 M.W 339.41 M.F C15H21N3O4S Specifications FAQs (4S)-2-(((R)-2-amino-2-(4-hydroxyphenyl)acetamido)methyl)-5,5-dimethylthiazolidine-4-carboxylic acid