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