New methyl-piperazino derivatives of formula:
where R is H or methyl, at least one R being methyl.
These products are excellent analgesics with peripheral and central activity, and are free from side effects.
新的甲基
哌嗪类衍
生物,其式如下: 其中 R 是 H 或甲基,至少一个 R 是甲基。 这些产品是极好的镇痛剂,具有外周和中枢活性,且无副作用。