1 ON1 2-(3,4-dichlorobenzyl)-5,6-dihydroxypyrimidine-4-carboxylic acid 1.000 2 P1Y 2-(3-bromo-4-methoxybenzyl)-5,6-dihydroxypyrimidine-4-carboxylic acid 0.783 3 IWI 2-[(3-chlorophenyl)methyl]-1,3-thiazole-4-carboxylic acid 0.714