4',5'-bis(4-carboxy-2-methylphenyl)-2,2''-dimethyl-[1,1':2',1''-terphenyl]-4,4''-dicarboxylic acid
4',5'-bis(4-carboxy-3-methylphenyl)-3,3''-dimethyl-[1,1':2',1''-terphenyl]-4,4''-dicarboxylic acid
3,3''-diamino-4',5'-bis(3-amino-4-carboxyphenyl)-[1,1':2',1''-terphenyl]-4,4''-dicarboxylic acid
4',5'-bis(4-carboxy-3-hydroxyphenyl)-3,3''-dihydroxy-[1,1':2',1''-terphenyl]-4,4''-dicarboxylic acid
4',5'-bis(4-carboxy-3-fluorophenyl)-3,3''-difluoro-[1,1':2',1''-terphenyl]-4,4''-dicarboxylic acid