M 2575 (OTTO) 3-Methoxy-2,4,5-trifluorobenzoic acid, 98% Cas 112811-65-1 - used as a precursor for the preparation of quinolone derivatives. M 2575 (OTTO) 3-Methoxy-2,4,5-trifluorobenzoic acid, 98% Cas 112811-65-1 - used to synthesize 1-(carboxymethyl)-6,7-difluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid.