1 D1Y (2z)-4-(2-chloro-4-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 1.000 2 ENG (2z)-4-(2-bromo-4-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.882 3 GXD 4-(2,6-dichlorophenyl)-2,4-dioxobutanoic acid 0.882 4 XI7 2-4-dioxo-4-phenylbutanoic acid 0.875 5 I93 4-(2-chloro-6-fluoro-3-methylphenyl)-2,4-dioxobutanoic acid 0.833 6 040 4-(2-methylphenyl)-2,4-dioxobutanoic acid 0.824 7 043 4-(3-bromophenyl)-2,4-dioxobutanoic acid 0.824 8 3EE 4-(2-aminophenyl)-2,4-dioxobutanoic acid 0.824 9 BQ4 (2z)-2-hydroxy-4-(3-hydroxyphenyl)-4-oxobut-2-enoic acid 0.824 10 BVS (2z)-2-hydroxy-4-(4-methylphenyl)-4-oxobut-2-enoic acid 0.824 11 EQA (2z)-4-(2-fluorophenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.824 12 I92 4-(2-bromophenyl)-2,4-dioxobutanoic acid 0.824 13 Y9E 2-oxo-4-phenylbutanoic acid 0.812 14 E9S (2z)-4-(2-bromo-3-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.778 15 EHV (2s)-4-(2-bromo-6-methylphenyl)-2-hydroxy-4-oxobutanoic acid 0.778 16 GXG 4-(2,6-difluorophenyl)-2,4-dioxobutanoic acid 0.778 17 01B (2s,3r)-3-amino-2-hydroxy-4-phenylbutanoic acid 0.765 18 6HY 4-oxidanylidene-4-(6-oxidanylidene-1~{H}-pyridin-3-yl)butanoic acid 0.765 19 6VF (2~{R},3~{S})-3-azanyl-4-(4-hydroxyphenyl)butane-1,2-diol 0.765 20 73O (2~{S})-2-azanyl-4-(4-hydroxyphenyl)butanoic acid 0.765 21 B3Y (3s)-3-amino-4-(4-hydroxyphenyl)butanoic acid 0.765 22 KRN (4r)-4-hydroxy-4-(2-hydroxyphenyl)butanoic acid 0.765 23 KY1 4-(2-aminophenyl)-4-oxobutanoic acid 0.765 24 TOH (3e)-4-(2-hydroxyphenyl)-2-oxobut-3-enoic acid 0.765 25 VP3 4-(4-fluorophenyl)-4-oxobutanoic acid 0.765 26 8MK (~{E})-4-(4-hydroxyphenyl)but-3-en-2-one 0.750 27 BKZ 4-(4-hydroxyphenyl)butan-2-one 0.750 28 CLT 4-phenyl-butanoic acid 0.750 29 5EQ (2z)-2-hydroxy-4-(1h-indol-5-yl)-4-oxobut-2-enoic acid 0.737 30 GXM (2z)-2-hydroxy-4-(2-nitrophenyl)-4-oxobut-2-enoic acid 0.737 31 GZV (2z)-4-(2,6-difluoro-3-methylphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.737 32 KYN (2s)-2-amino-4-(2-aminophenyl)-4-oxobutanoic acid 0.722 33 TOM 4-(2-methoxyphenyl)-2-oxobut-3-enoic acid 0.722 34 3FB (3s)-3-amino-4-phenylbutanoic acid 0.706 35 HMF 2-amino-4-phenyl-butyric acid 0.706 36 HPE Homophenylalanine 0.706 37 5M2 (~{z})-4-(4-methyl-1~{H}-indol-5-yl)-2-oxidanyl-4-oxidanylidene-but-2-enoic acid 0.700 38 BSV (2z)-4-(5-cyclopropyl-2-methylphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.700 39 BXS (2z)-4-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-hydroxy-4-oxobut-2-enoic acid 0.700 40 C0V (2z)-2-hydroxy-4-(naphthalen-2-yl)-4-oxobut-2-enoic acid 0.700