1 RG2 3-[(4-chlorobenzyl)amino]-6-(trifluoromethyl)quinoxaline-2-carboxylic acid 1.000 2 36C 3-[(4-fluorobenzyl)amino]-6-(trifluoromethyl)quinoxaline-2-carboxylic acid 0.926 3 38C 3-[(4-methoxybenzyl)amino]-6-(trifluoromethyl)quinoxaline-2-carboxylic acid 0.893 4 R26 3-[(4-cyanobenzyl)amino]-6-(trifluoromethyl)quinoxaline-2-carboxylic acid 0.893 5 R57 3-[(3-fluoro-4-methoxybenzyl)amino]-6-(trifluoromethyl)quinoxaline-2-carboxylic acid 0.862 6 R58 3-[(4-ethoxybenzyl)amino]-6-(trifluoromethyl)quinoxaline-2-carboxylic acid 0.862 7 Y22 6-(trifluoromethyl)-3-{[4-(trifluoromethyl)benzyl]amino}quinoxaline-2-carboxylic acid 0.833