N-Glucosyl Metabolite of Pyrazon in Red Beets

Red beets (Beta vulgaris L., var. Detroit Dark Red) converted the herbicide 5-amino 4-chloro-2-phenyl-3(2H)-pyridazinone (pyrazon) to N-2-chloro-4-phenyl-3-(2H)-pyridazinone glucosamine. Isolation was accomplished by water, benzene, and alcohol extraction of foliage followed by purification through molecular sieve columns. Identification was established by infrared spectroscopy, and thin layer and gas liquid chromatography.