Ascomycin 19 Epimer Impurity, Purity : Nlt 90%, Form : Powder

Chemical Name: (3S, 4R, 5S, 8R, 9E, 12S, 14S, 15R, 16S, 18R, 19S, 26aS)-8-Ethyl-5, 6, 8, 11, 12, 13, 14, 15, 16, 17, 18, 19, 24, 25, 26, 26a-hexadecahydro-5, 19-dihydroxy-3-[(1E)-2-[(1R, 3R, 4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-14, 16-dimethoxy-4, 10, 12, 18-tetramethyl-15, 19-epoxy-3H-pyrido[2, 1-c][1, 4]oxaazacyclotricosine-1, 7, 20, 21(4H, 23H)-tetrone