2.two.4 As being the GC-EI based MS are not able to discriminate involving stereoisomers as well as the L and D are most unquestionably stereoisomers, (the device loses the ability to be selective among stereoisomers Until a chiral column is employed), they can not tell the distinction between the two. http://emilianokggmp.blogs-service.com/2394567/new-step-by-step-map-for-case-study-help