Vilprafen;Wilprafen;JosamycinSolution,100ppm;Josamycinforpeakidentification;3-Acetate4B-(3-Methylbutanoate)ChemicalbookleucoMycinV;LeucoMycinV,3-acetate4B-(3-Methylbutanoate);LeucomycinV3-acetate4''-(3-methylbutanoate);YL-704A