代谢
在大鼠静脉注射(14)CH3-甲基甲磺酸后的前16小时内,鉴定出了多种尿代谢物(甲基硫醇尿酸磺酸酯、2-羟基-3-甲基硫亚磺基丙酸、甲基硫亚磺基乙酸以及甲基硫醇尿酸和N-(甲基硫代乙酰基)甘氨酸的混合物)。这些代谢物大约占排泄放射活性的80%,是由甲基甲磺酸对半胱氨酸残基的甲基化作用产生的。
Various urinary metabolites (methylmercapturic acid sulfoxide, 2-hydroxy-3-methylsulfinylpropionic acid, methylsulfinylacetic acid and a mixture of methylmercapturic acid and N-(methylthioacetyl)glycine) were identified in rats after iv administration of (14)CH3-methyl methansulfonate during the first 16 hr. About 80% of the excreted radioactivity was accounted for by these metabolites, resulting from an initial methylation of cysteine residues by methyl methanesulfonate.
来源:Hazardous Substances Data Bank (HSDB)