1 BVS (2z)-2-hydroxy-4-(4-methylphenyl)-4-oxobut-2-enoic acid 1.000 2 XI7 2-4-dioxo-4-phenylbutanoic acid 0.933 3 040 4-(2-methylphenyl)-2,4-dioxobutanoic acid 0.875 4 043 4-(3-bromophenyl)-2,4-dioxobutanoic acid 0.875 5 3EE 4-(2-aminophenyl)-2,4-dioxobutanoic acid 0.875 6 BQ4 (2z)-2-hydroxy-4-(3-hydroxyphenyl)-4-oxobut-2-enoic acid 0.875 7 EQA (2z)-4-(2-fluorophenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.875 8 I92 4-(2-bromophenyl)-2,4-dioxobutanoic acid 0.875 9 Y9E 2-oxo-4-phenylbutanoic acid 0.867 10 D1Y (2z)-4-(2-chloro-4-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.824 11 E9S (2z)-4-(2-bromo-3-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.824 12 EHV (2s)-4-(2-bromo-6-methylphenyl)-2-hydroxy-4-oxobutanoic acid 0.824 13 ENG (2z)-4-(2-bromo-4-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.824 14 GXD 4-(2,6-dichlorophenyl)-2,4-dioxobutanoic acid 0.824 15 GXG 4-(2,6-difluorophenyl)-2,4-dioxobutanoic acid 0.824 16 01B (2s,3r)-3-amino-2-hydroxy-4-phenylbutanoic acid 0.812 17 KRN (4r)-4-hydroxy-4-(2-hydroxyphenyl)butanoic acid 0.812 18 KY1 4-(2-aminophenyl)-4-oxobutanoic acid 0.812 19 TOH (3e)-4-(2-hydroxyphenyl)-2-oxobut-3-enoic acid 0.812 20 VP3 4-(4-fluorophenyl)-4-oxobutanoic acid 0.812 21 CLT 4-phenyl-butanoic acid 0.800 22 5EQ (2z)-2-hydroxy-4-(1h-indol-5-yl)-4-oxobut-2-enoic acid 0.778 23 GXM (2z)-2-hydroxy-4-(2-nitrophenyl)-4-oxobut-2-enoic acid 0.778 24 GZV (2z)-4-(2,6-difluoro-3-methylphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.778 25 HH4 4-(4-tert-butylphenyl)-4-oxobutanoic acid 0.778 26 I93 4-(2-chloro-6-fluoro-3-methylphenyl)-2,4-dioxobutanoic acid 0.778 27 KYN (2s)-2-amino-4-(2-aminophenyl)-4-oxobutanoic acid 0.765 28 TOM 4-(2-methoxyphenyl)-2-oxobut-3-enoic acid 0.765 29 3FB (3s)-3-amino-4-phenylbutanoic acid 0.750 30 HMF 2-amino-4-phenyl-butyric acid 0.750 31 HPE Homophenylalanine 0.750 32 5M2 (~{z})-4-(4-methyl-1~{H}-indol-5-yl)-2-oxidanyl-4-oxidanylidene-but-2-enoic acid 0.737 33 BSV (2z)-4-(5-cyclopropyl-2-methylphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.737 34 BXS (2z)-4-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-hydroxy-4-oxobut-2-enoic acid 0.737 35 C0V (2z)-2-hydroxy-4-(naphthalen-2-yl)-4-oxobut-2-enoic acid 0.737 36 P18 3-hydroxy-1-phenylpropan-1-one 0.733 37 3DJ (2s)-2-amino-4-(2-amino-3-hydroxyphenyl)-4-oxobutanoic acid 0.722 38 HMZ 4-(2-hydroxy-4-methoxyphenyl)-4-oxobutanoic acid 0.722 39 OSB 2-succinylbenzoate 0.722 40 6HY 4-oxidanylidene-4-(6-oxidanylidene-1~{H}-pyridin-3-yl)butanoic acid 0.706 41 6VF (2~{R},3~{S})-3-azanyl-4-(4-hydroxyphenyl)butane-1,2-diol 0.706 42 73O (2~{S})-2-azanyl-4-(4-hydroxyphenyl)butanoic acid 0.706 43 ACZ Cis-amiclenomycin 0.706 44 B3Y (3s)-3-amino-4-(4-hydroxyphenyl)butanoic acid 0.706 45 TZA Trans-amiclenomycin 0.706 46 W1N (3s)-3-amino-4-(2-fluorophenyl)butanoic acid 0.706