for the following products
(2R,3R)-Boc-beta-methyl-L-Phe-OH | (2R,3R)/(2S,3S)-Boc-DL-beta-methyl-Phe-OH | (2S,3S)-Boc-beta-methyl-L-Phe-OH | Boc-beta-Me-Phe-OH (RR,SS) | N-alpha-tert-Butyloxycarbonyl-C-beta-methyl-phenylalanine (2R,3R)/(2S,3S)-racemic | N-Boc-Erythro-dL-beta-methylphenylalanine and Boc-beta-methyl-DL-phenylalanine
