代谢
施用[氰基-(14)C]碘氧炔四天后,在抗性大麦中初步鉴定出未改变的碘氧炔、微量的苯甲酰胺和苯甲酸衍生物,以及至少2种其他未知的(14)C化合物。...这些有限的降解研究/对易感海岸提琴颈和抗性冬小麦/表明,碘氧炔的自由氰基团在植物中缓慢水解为相应的苯甲酰胺和苯甲酸衍生物,并可能通过脱羧、脱卤或与苄基或芳香环结合进一步降解。脱羧和...结合反应可能比水解快得多。微量水解产物的检测和与(CYANO-14C)碘氧炔的快速积累的不溶性残留物支持这一点...
FOUR DAYS AFTER FOLIAR TREATMENT WITH [CYANO-(14)C]IOXYNIL, UNCHANGED IOXYNIL, TRACE AMT OF BENZAMIDE & BENZOIC ACID DERIVATIVES, AND AT LEAST 2 OTHER UNKNOWN (14)C COMPOUNDS WERE TENTATIVELY IDENTIFIED IN RESISTANT BARLEY. ... THESE LIMITED DEGRADATION STUDIES /OF SUSCEPTIBLE COAST FIDDLENECK AND RESISTANT WINTER WHEAT/ SUGGEST THAT THE UNHINDERED NITRILE GROUPS OF ... IOXYNIL ARE SLOWLY HYDROLYZED IN THE PLANT TO THE CORRESPONDING BENZAMIDE AND BENZOIC ACID DERIVATIVES WITH POSSIBLE FURTHER DEGRADATION THROUGH DECARBOXYLATION, DEHALOGENATION, OR CONJUGATION OF THE BENZYL MOIETY OR THE AROMATIC RING. DECARBOXYLATION &...CONJUGATION REACTIONS MAY BE MUCH FASTER THAN HYDROLYSIS. THIS IS SUPPORTED BY THE DETECTION OF TRACE AMT OF THE HYDROLYSIS PRODUCTS & THE RAPID ACCUMULATION OF INSOLUBLE RESIDUES WITH (CYANO-14C)IOXYNIL...
来源:Hazardous Substances Data Bank (HSDB)