... Name: (4R)-4-deoxy-4-(methylamino)avermectin B1 benzoate (1:1)Formula: C56H81NO15 (emamectin B1a benzoate) + C55H79NO15 (emamectin B1b benzoate)Molecular Weight: B1a: 1007 B1b: 993CAS No ... , 90%TC, 0.2%,0.5%,1.0%,1.9%,2%,2.15%EC,5%WSG.Uses: Emamectin Benzaote strain new highly effective half synthesis ...