代谢
在大鼠的所有处理组的尿液和粪便中均检测到了四种代谢物和母体化合物。母体化合物占据了尿液中放射性活性的大部分(77-90%),以及粪便中放射性活性的1.8-6.2%(相对于给药剂量)。代谢物I与(甲基2-((氨基)磺酰基)苯甲酸酯)一致;代谢物II为(2-((氨基)磺酰基)苯甲酸);代谢物III与(甲基2-((((氨基)羰基)氨基)磺酰基)苯甲酸酯)一致。代谢物I和II似乎是由连续的水解反应形成的,最终生成糖精,而代谢物III是由两个环结构的断裂形成的。总代谢物(每个组的尿液和粪便中)大约占给药剂量的5.4-8.2%。尿液和粪便中的代谢物轮廓在定性上是相似的,因为母体化合物和四种代谢物(糖精,代谢物I、II和III)在这两种基质中都被发现。
Four metabolites and parent were recovered in both urine and feces /of rats/ in all treatment groups. Parent compound accounted for most of the urinary and fecal radioactivity (77-90% and 1.8-6.2% of the administered dose, respectively). Metabolite I was consistent with (methyl 2-((amino)sulfonyl)benzoate); Metabolite II - (2-((amino)sulfonyl)benzoic acid); and Metabolite III was consistent with (methyl 2-((((amino)carbonyl)amino)sulfonyl)benzoate). Metab. I and II appeared to result from sequential hydrolysis reactions terminating in the formation of saccharin while metab. III was formed by cleavage of the two ring structures. Total metabolites (in urine + feces of each group) accounted for approximately 5.4-8.2% of the administered dose. The metabolite profiles were qualitatively similar for urine and feces in that parent compound and the four metabolites (saccharin, metabolites I, II, and III) were found in both matrices.
来源:Hazardous Substances Data Bank (HSDB)