3-(3,5-dimethoxyphenyl)-4-fluorobenzoic acid 6-fluoro-3',5'-dimethoxy-[1,1'-biphenyl]-3-carboxylic acid 6-fluoro-3',5'-dimethoxy[1,1'-biphenyl]-3-carboxylic acid AK490774 BG01568968 DTXSID20690866 mfcd18321407