123997-26-2 159628-36-1 A mixture of two components having a ratio of 90 or more of epinometin component B1a and 10 or less of eprinometin component B1b Avermectin B1, 4''-(acetylamino)-4''-deoxy-, (4''R)- Eprinex Eprinomectin Eprinomectin [USAN] MK 397