74-96-4
溴乙烷
+
58-55-9
茶碱
→
~95%
23043-88-1
7-ethyl-1,3-dimethylpurine-2,6-dione
75-03-6
碘乙烷
~80%
186581-53-3
重氮甲烷
102244-26-8
1-methyl-7-ethylxanthine
~39%
80-40-0
对甲苯磺酸乙酯
57533-87-6
3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione, potassium salt