107749-17-7 11-((2-Dimethylaminoethyl)oxymethyl)erythromycin A 9-methoxime 11-O-((2-(Dimethylamino)ethoxy)methyl)erythromycin 9-(O-methyloxime) ER 42859 ER-42859 Erythromycin, 11-O-((2-(dimethylamino)ethoxy)methyl)-, 9-(O-methyloxime)