合成的咖啡因产品中,萤光是国內外普遍存在的问题,至今尚无妥善解决办法。萤光究竟为何物,种类多寡,具有何种理化性质,生成原因及其化学结构如何等等,至今一无所知,仅沈琼等对黃嘌昤及咖啡因母液进行纸上层析,剪取斑点测定紫外吸收峯分别为280、300及275毫微米三种。国內大多数药厂的生产过程如下式所示: Among the synthesized caffeine products, fluorescence is a ubiquitous problem at home and abroad, so far there is no proper solution. Fluorescent what exactly, the type of species, with what physicochemical properties, the reasons for the formation and how the chemical structure, etc., so far unknown, only Shen Qiong and other caffeine xanthine and mother liquor on paper chromatography, cut the spot Determination of UV absorption peaks were 280,300 and 275 nm three. Most domestic pharmaceutical production process as shown below: