為實驗者效勞
Benzylamine CAS:100-46-9
250ML
Diethylene glycol monobutyl ether CAS: 112-34-5
Potassium permanganate
CAS：7722-64-7
Indigo carmine C.I. 73015
CAS：860-22-0
Diisobutyl ketone CAS: 108-83-8
