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100 Kilogram |
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Progesterone manufacturer Progesterone high quality 57-83-0 low price
ms | Standard | Result |
Appearance | White powder | White powder |
Identification | A:IR B:UV | Conform |
Melting range | 126—131℃ | 128.0—129.5℃ |
Specific optical rotation | +175--+183° | +182.30° |
Loss on drying | 0.5% max | 0.12% |
Residual solvents | 129ppm max | Not detected |
Methanol | 2500ppm max | 780 ppm |
Ethanol | 108ppm max | Not detected |
Petroleum ether | 15ppm max | Not detected |
Toluene | 33ppm max | 22 ppm |
Cyclohexanone | ||
Assay | 97.0—103.0% | 99.15% |
Micron | / | 100%≦20 mesh |
Conclusion | The products’ quality complies with USP39. |
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