SynonymsSpiro[11,15-methano-2H,7H,13H-furo[4,3,2-pq][2,6]benzodioxacyclooctadecin-13,2'-[2H]pyran] Milbemycin B deriv.; Antibiotic B 41A4; Emamectin A4; Milbemycin A4Milbemycin ?3; Milbemycin EP Impurity A: Close Spiro[11,15-methano-2H,7H,13H-furo[4,3,2-pq][2,6]benzodioxacyclooctadecin-13,2'-[2H]pyran] Milbemycin B deriv.; Antibiotic B 41A4; Emamectin A4; Milbemycin A4Milbemycin ?3; Milbemycin EP Impurity A: Related products Milbemectin A3 M.F. M.W. 528.69 CAT# AR-M01857 CAS# 51596-10-2 Milbemectin A4 M.F. M.W. 542.71 CAT# AR-M01858 CAS# 51596-11-3