dimethyl 4-trifluoromethylthiazole-2,5-dicarboxylate

carbonic acid,prop-2-yn-1-ol

2-methyl-9,10-dihydroanthracene-9,10-dicarboxylic acid

methyl 11H-benzo[b]fluorene-11-carboxylate

10-溴蒽-9-羧酸