Linezolid Impurity 11 Catalogue L435671 CAS 908143-04-4 M.W 615.63 M.F C30H35F2N5O7 Specifications FAQs N,N-bis(((S)-3-(3-fluoro-4-morpholinophenyl)-2-oxooxazolidin-5-yl)methyl)acetamide