為實驗者效勞
Benzoin CAS:119-53-9
250G
Diethylene glycol monoethyl ether CAS: 111-90-0
CAS:57-55-6
1,2-Propylene glycol, extra pure, Pharmpur®, Ph Eur, BP, USP
Dibutylamine CAS: 111-92-2
L(+)-Tartaric acid
CAS :87-69-4