They are 4,8?dimethyl?l?nonanol, 5,9?dimethyl?1?decanol, 5,9?dimethyl?2?cyclopropyl?2?decanol, and 5,9?dimethyl?1,2?decanediol, and they were evaluated as penetration enhancer toward 5?Flourouracil.

• 增加5个碳原子的第三醇：5，9－二甲基－2－环丙基－2－癸醇； 增加2个碳原子同时引入一个羟基的5，9－二甲基－1，2－癸二醇。