METABOLISM OF CHLORPROPHAM (ISOPROPYL M-CHLOROCARBANILATE) IN VARIOUS PLANT SPECIES

Chlorpropham is extensively converted to watersoluble metabolites in the susceptible species, smartweed, pigweed, and tomato, but only slightly in the tolerant species, parsnip. The metabolites from smartweed, tomato, and parsnip consist mainly of α-glycosides with a modified chlorpropham molecule as the aglycone entity; that from pigweed also contained the modified chlorpropham molecule, but was not glycosidic in nature. Glycoside formation did not account for the various susceptibilities of these species to chlorpropham. The modification of the chlorpropham molecule did not occur in the ring and did not involve hydroxylation at the bridging nitrogen atom. © 1969, American Chemical Society. All rights reserved.