Determination of ormetoprim in animal tissues

HPLC method for the simultaneous analysis of sulfadimethoxine and ormetoprim in tissues and blood of cattle, chickens, and catfish

“…Only one method has been published for OMP in animal tissues or fluids (Fellig et al, 1971). This method involves the permanganate oxidation of OMP to a fluorescent product, 4,5-dimethoxy-o-toluic acid, and measurement of the fluorescence at 345 nm while excitating at 305 nm.…”