代谢
在大鼠代谢研究中,几乎100%的给予的放射性标记测试物质/咪草烟/在96小时内通过排泄物回收(89-95%在尿液中,6-11%在粪便中)。超过95%的口服剂量在前31小时内被排出。尿液和粪便中的主要残留物是母化合物。大约2%的口服剂量被代谢并作为CL 288511(咪草烟的1-羟基乙基衍生物)排出。大量给予的物质以未修改的母化合物形式在尿液中排出(>97%),极少量作为CL 288511。在高剂量组中,未修改的母化合物是两性的主要粪便成分,特别是在12小时或更短时间内。CL 288511是主要的代谢物。还发现了大量的一个未知代谢物。在低剂量组中,粪便中发现了六个成分:母化合物、CL 288511、前面提到的未知物和三个次要的未知物。
In a rat metabolism study, almost 100% of the administered radiolabeled test material /imazethapyr/ was recovered in the excreta within 96 hours (89-95% in the urine and 6-11% in the feces). Greater than 95% of the oral dose was excreted in the first 31 hours. The major residue in both urine and feces was the parent compound. Approximately 2% of the oral dose was metabolized and excreted as CL 288511 (1-hydroxy ethyl derivative of imazethapyr). A high percentage of the administered material was excreted in the urine as the unmodified parent compound (> 97%) and a very small amount as CL 288511. In the high dose group, the unmodified parent compound was the major fecal component in both sexes, particularly at 12 hours or less. CL 288511 was the major metabolite. One unknown metabolite was also found in significant quantities. In the low dose group, six components were found in the feces: parent compound, CL 288511, the unknown previously mentioned and three minor unknowns.
来源:Hazardous Substances Data Bank (HSDB)