1 NOR Cyclohexyl-norstatine 1.000 2 005 (2s,3s)-3-amino-2-hydroxy-4-phenylbutanoic acid 0.722 3 01B (2s,3r)-3-amino-2-hydroxy-4-phenylbutanoic acid 0.722 4 6VF (2~{R},3~{S})-3-azanyl-4-(4-hydroxyphenyl)butane-1,2-diol 0.722