代谢
当给予大鼠一次口服剂量为1 mg/kg对氯(三氟甲基-(14)C)苯三氟甲醚时,3-4%和14-15%的施用(14)C分别通过粪便和尿液排出。主要的尿代谢物是对二羟基苯三氟甲醚和4-氯-3-羟基苯三氟甲醚的葡萄糖苷酸(每种都代表施用(14)C的3-4%),以及少量的对氯苯三氟甲醚的巯基尿酸结合物。对氯苯三氟甲醚本身被大鼠迅速呼出(占施用剂量的62-82%)并且在粪便中是主要的(14)C标记残留物。组织中(14)C标记残留物的水平较低,但大鼠体内剂量后4天的小量放射性标记物(施用剂量的1%)也被鉴定为对氯苯三氟甲醚,并且主要发现于脂肪中。
When rats were given a single oral dose of 1 mg/kg p-chloro(trifluoromethyl-(14)C) benzotrifluoride 3-4%, and 14-15% of the applied (14)C were excreted in feces and urine, respectively. The major urinary metabolites were glucuronides of dihydroxybenzotrifluoride and 4-chloro-3-hydroxybenzotrifluoride (each representing 3-4% of the applied (14)C), and minor amounts of a mercapturic acid conjugate of p-chlorobenzotrifluoride. p-Chlorobenzotrifluoride itself was rapidly expired by rats (62-82% of the applied dose) and was the major (14)C- labeled residue in feces. Levels of (14)C-labeled residues in tissues were low, but the small amount of radiolabel in the rat carcass 4 days after dosage (1% applied dose) was also identified as p-chlorobenzotrifluoride and was found predominantly in fat.
来源:Hazardous Substances Data Bank (HSDB)