I don't know why caffeine's suddenly got such a bad rep.

我不知道为什么啡因突然得了这么个坏名声。

HPLC method for determination of phenylephrine hydrochloride, paracetamol, caffeine anhydrous,salicylamide and brompheniramine maleate in Liufenkamin tablets was established.

建立了HPLC法测定柳酚中盐去氧肾上腺素、对乙酰氨基酚、无水啡因、水杨酰胺、马来溴苯那的含量。

"Chocolate contains many substances that act as stimulants, such as theobromine, phenethylamine, and caffeine," Dr. Bryan Raudenbush from Wheeling Jesuit University in West Virginia.

西弗吉尼亚威林耶稣大学的布莱恩博士说：“巧含有很多具有兴奋作用的物质，如可可碱、苯已基以及啡因。”