為實驗者效勞
Ammonium chloride CAS No: 12125-02-9
Diethyl ether CAS: 60-29-7
Diethylene glycol monobutyl ether CAS: 112-34-5
Diethylene glycol monoethyl ether CAS: 111-90-0
Potassium permanganate
CAS：7722-64-7
