代谢
在口服给药后48小时内,实现了季铵-15的几乎完全吸收(剂量的84%-88%),而在同一时间内,通过涂抹稀释或浓缩溶液的皮肤吸收仅为1%至2%;未确定吸收率。季铵-15的放射性排泄是双峰的,最初快速(半衰期=1.3±0.1小时)然后缓慢(半衰期=22.7±2.0小时)。达到系统循环的季铵-15被广泛代谢。代谢的程度受到给药途径的影响,因为通过皮肤应用后,环衍生CO2的量仅发现最少有5%。唯一暂时确定的代谢物是甲酸(仅基于保留时间)。尽管在大鼠尿液中发现了其他几种代谢物,但尝试识别这些化合物的努力并未成功。
Almost complete absorption of Quaternium-15 (84%-88% of dose) was achieved in 48 hours after oral administration, whereas only 1% to 2% absorption occurred in that time after dermal application of dilute or concentrated solutions; absorption rates were not determined. Excretion of radioactivity from Quaternium-15 was bimodal, initially rapid (half-life = 1.3 + or - 0.1 hours) and then slow (half-life = 22.7 + or - 2.0 hours). Quaternium-15 that reached the systemic circulation was metabolized extensively. The extent of metabolism was influenced by the route of administration, because as little as 5% of ring-derived CO2 was found after dermal application. The only metabolite tentatively identified was formic acid (based solely on retention times). Although several other metabolites were found in the urine of rats, attempts to identify these compounds were unsuccessful.
来源:Hazardous Substances Data Bank (HSDB)