Roxithromycin 5 g. Roxithromycin, macrolide antibiotic, derived from erythromycin A, CAS: 80214-83-1, Molecular Formula: C41H76N2O15, Molecular Weight: 837.05, Purity:
/= 95% by HPLC, Solubility: DMSO or EtOH, Synonym: Rulide, Surlid, Rotramin, Appearance: White solid, Storage: -20 deg C, Size: 5 g