... :22,23-dihydroavermectin; mk-0933; 22,23-DIHYDROAVERMECTIN B1; Ivermectin Injection CAS: 70288-86-7 Molecular Formula:C48H74O14 Molecular ... agents isolated from the fermentation products of Streptomyces avermitilis. Ivermectin is a mixture containing at least 90% 5-O- ... molecular weights of 875.10 and 861.07, respectively. Ivermectin is a white to yellowish-white, nonhygroscopic, crystalline powder ...