1 5EQ (2z)-2-hydroxy-4-(1h-indol-5-yl)-4-oxobut-2-enoic acid 1.000 2 5M2 (~{z})-4-(4-methyl-1~{H}-indol-5-yl)-2-oxidanyl-4-oxidanylidene-but-2-enoic acid 0.944 3 BSV (2z)-4-(5-cyclopropyl-2-methylphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.842 4 C0V (2z)-2-hydroxy-4-(naphthalen-2-yl)-4-oxobut-2-enoic acid 0.842 5 XI7 2-4-dioxo-4-phenylbutanoic acid 0.824 6 Q5M 4-(naphthalen-1-yl)-4-oxobutanoic acid 0.789 7 040 4-(2-methylphenyl)-2,4-dioxobutanoic acid 0.778 8 043 4-(3-bromophenyl)-2,4-dioxobutanoic acid 0.778 9 3EE 4-(2-aminophenyl)-2,4-dioxobutanoic acid 0.778 10 BQ4 (2z)-2-hydroxy-4-(3-hydroxyphenyl)-4-oxobut-2-enoic acid 0.778 11 BVS (2z)-2-hydroxy-4-(4-methylphenyl)-4-oxobut-2-enoic acid 0.778 12 EQA (2z)-4-(2-fluorophenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.778 13 I92 4-(2-bromophenyl)-2,4-dioxobutanoic acid 0.778 14 Y9E 2-oxo-4-phenylbutanoic acid 0.765 15 ENY (2z)-2-hydroxy-4-(6-methoxynaphthalen-2-yl)-4-oxobut-2-enoic acid 0.762 16 D1Y (2z)-4-(2-chloro-4-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.737 17 E9S (2z)-4-(2-bromo-3-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.737 18 EHV (2s)-4-(2-bromo-6-methylphenyl)-2-hydroxy-4-oxobutanoic acid 0.737 19 ENG (2z)-4-(2-bromo-4-hydroxyphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.737 20 GXD 4-(2,6-dichlorophenyl)-2,4-dioxobutanoic acid 0.737 21 GXG 4-(2,6-difluorophenyl)-2,4-dioxobutanoic acid 0.737 22 01B (2s,3r)-3-amino-2-hydroxy-4-phenylbutanoic acid 0.722 23 KRN (4r)-4-hydroxy-4-(2-hydroxyphenyl)butanoic acid 0.722 24 KY1 4-(2-aminophenyl)-4-oxobutanoic acid 0.722 25 TOH (3e)-4-(2-hydroxyphenyl)-2-oxobut-3-enoic acid 0.722 26 VP3 4-(4-fluorophenyl)-4-oxobutanoic acid 0.722 27 CLT 4-phenyl-butanoic acid 0.706 28 5ER (2z)-2-hydroxy-4-(1h-indol-3-yl)-4-oxobut-2-enoic acid 0.700 29 70H (3e)-4-(8-methylnaphthalen-1-yl)but-3-enoic acid 0.700 30 GXM (2z)-2-hydroxy-4-(2-nitrophenyl)-4-oxobut-2-enoic acid 0.700 31 GZV (2z)-4-(2,6-difluoro-3-methylphenyl)-2-hydroxy-4-oxobut-2-enoic acid 0.700 32 I93 4-(2-chloro-6-fluoro-3-methylphenyl)-2,4-dioxobutanoic acid 0.700 33 QF0 (3s)-3-amino-4-(naphthalen-2-yl)butanoic acid 0.700