D-Tryptophan153-94-6D-tryptophanmethylesterhydrochloride14907-27-8D-Proline344-25-2D-Valine640-68-6D-Leucine328-38-1D-Histidine351-50-8D-Methionine348-67-4D-cystine349-46-2D-Serine312-84-5Boc-L-Norvaline53308-95-5BOC-D-Leucinemonohydrate16937-99-8D-Lysinehydrochloride7274-88-6N-tert-Butoxycarbonyl-D-norvaline57521-85-4Boc-L-Leucine13139-15-6D-(-)-Argininehydrochloride627-75-8)