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红霉素为白色或类白色的结晶或粉末;无臭,味苦;微有引湿性。在甲醇、乙醇或丙酮中易溶,在水中极微溶解。
Erythromycin is white or almost white crystalline or powder; odorless, bitter; slightly hygroscopic. Soluble in methanol, ethanol or acetone, very slightly soluble in water.