代谢
...雄性Sprague-Dawley大鼠口服给予0.051,或5.1 mmol/kg (14)C标记的bis(2-甲氧基乙基)醚。主要尿代谢物为(2-甲氧基乙氧基)乙酸和甲氧基乙酸,分别约占剂量的70%和6%。还发现了较小量的N-(甲氧基乙酰)甘氨酸、二甘醇酸、2-甲氧基乙醇和2-(2-甲氧基乙氧基)乙醇。在呼出气体的挥发性有机部分中,仅发现了未改变的bis(2-甲氧基乙基)醚。...bis(2-甲氧基乙基)醚的代谢主要通过O-脱甲基途径,随后氧化为(2-甲氧基乙氧基)乙酸。2-(2-甲氧基乙氧基)乙醇和(2-甲氧基乙氧基)乙酸的无毒性表明,bis(2-甲氧基乙基)醚的睾丸毒性可能是由甲氧基乙酸这一次要代谢物引起的。
...Male Sprague-Dawley rats were given 0.051, or 5.1 mmol/kg (14)C labeled bis(2-methoxyethyl)ether orally. The principal urinary metabolites were (2-methoxyethoxy)acetic acid and methoxyacetic acid which accounted for around 70 and 6% of the doses, respectively. Smaller amounts of N-(methoxyacetyl)glycine, diglycolic acid, 2-methoxyethanol, and 2-(2-methoxyethoxy)ethanol were found. Only unchanged bis(2-methoxyethyl)ether was found in the volatile organic fraction of the expired air. ...Bis(2-methoxyethyl)ether metabolism proceeds primarily through an O-demethylation pathway, followed by oxidation to (2-methoxyethoxy)acetic acid. The lack of toxicity of 2-(2-methoxyethoxy)ethanol and (2-methoxyethoxy)acetic acid suggests that the testicular toxicity of bis(2-methoxyethyl)ether may be due to methoxyacetic acid, a minor metabolite.
来源:Hazardous Substances Data Bank (HSDB)