Phenylalanine,4-methyl- (CAS NO.4599-47-7), its Synonyms are DL-Phe(4-Me)-OH ; 4-Methy-DL-phenylalanine ; DL-4-Me-Phe-OH ; 4- Methylphenylalanine(4-methylphe) ; 2-Amino-3-p-tolylpropanoic acid ; 4-Methyl-DL-phenylalanine .