Isotope labelled Ivermectin, is the labeled analogue of Ivermectin, which is a semi-synthetic derivative of Abamectin; consists of a mixture of not less than 80% component B1a and not more than 20% component B1b. Antihelmintic (Onchocerca).Synonyms:22,23-Dihydroavermectin B1-d2; 22,23-Dihydro C-076B1-d2;