Ivermectin B1a 是 Avermectin B1a 的一种衍生物，是 Ivermectin 的主要成分。Ivermectin 是广谱的抗寄生虫剂。Ivermectin 也是抗 SARS-CoV-2/COVID-19 的候选药物。

Ivermectin B1a is the major (80%) component of commercially available ivermectin and a derivative of Avermectin B1a.

Ivermectin B1a(0.3 μg/ml) is inactive, whereas in the case of the minor component, ivermectin B1b(0.3 μg/ml) produces 100% mortality of snails[1].

71827-03-7

C48H74O14

875.09

DMSO:100 mg/mL (114.27 mM)
Powder: -20°C for 3 years
In solvent: -80°C for 2 years