211997-36-3

Tylosin,(2R,3R)-2,3-dihydroxybutanedioate (salt),mixt. with 21-(acetyloxy)-17-hydroxypregna-1,4-diene- 3,11,20-trione and 2,2-dichloro-N-[(1R,2R)-2-hydroxy-1- (hydroxymethyl)-2-(4-nitrophenyl)ethyl]- acetamide