Test Analysis Standard Results Characteristics White to yellowish-white crystalline powder conform Assay 97 ~ 103% 99.31% Loss on drying ≤0.5% 0.18% Identification Positive conform Specific optical rotation ﹢77°~﹢82° +79.3° Melting point 32 ~ 37℃ 34~36℃ Free heptanoic acid ≤0.2% 0.11% Related substances ≤2% conform Residual solvents(GC) ≤100ppm conform Conclusion This batch is complies with EP 5 White crystalline powder or brown liquid. Uses clinical for the treatment of male sexual dysfunction, aplastic anemia and other diseases