L-leucinatehydrochloride7517-19-3L-Cysteinemethylesterhydrochloride18598-63-5L-tert-Leucine20859-02-3L-Tryptophan73-22-3L-Methionine63-68-3L-Norleucine327-57-1L-Norvaline6600-40-4L-cystinediethylesterdihydrochloride583-89-1L-2-aminobutyricacid1492-24-6D-2-aminobutyricacid2623-91-8DL-Norleucine616-06-8DL-isoleucine443-79-8DL-Norvaline760-78-1DL-Leucine328-39-2DL-Valine516-06-3DL-Phenylalanine150-30-1DL-Alanine302-72-7DL-Serine302-84-1DL-Tryptophan54-12-6(R)-methyl2-amino-3-chloropropanoate17136-54-8)