為實驗者效勞
n-Butylamine CAS:109-73-9
1L
Dibutyl ether CAS: 142-96-1
2,6-Di-tert-butyl-4-methylphenol CAS: 128-37-0
Dextrin white CAS: 9004-53-9
Potassium permanganate
CAS：7722-64-7
