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MF:C12H17N4OS
Content:99%
Color:white
White crystal or crystalline powder; a weak special smell, bitter taste, there are cited moist, exposed in the air, easy to absorb moisture. It is used to promote growth; help digestion, especially in carbohydrate digestion; to improve mental health; maintain nerve tissue, muscle, normal heart activity; relieve motion sickness, motion sickness; can ease the pain related to dental surgery; contribute to the band Like herpes (herpes zoster) treatment.
Plays an important role to maintain normal nerve conduction, heart and digestive system to normal activities. Lack of time, susceptible to beriberi or polyneuritis embolism.
| Item | Standard | Result | |||||
| BP2012 | Appearance | White or almost white, crystalline powder or colourless crystals | White crystalline powder | ||||
| Identification | A: IR absorption | Comply | |||||
| C: Reaction (a) of chlorides | |||||||
| Appearance of solution | Clear, not more intense than Y7 or GY7 | Comply | |||||
| PH | 2.7-3.3 | 3.0 | |||||
| Water | ≤5.0% | 2.34% | |||||
| Sulphated ash | ≤0.1% | 0.01% | |||||
| Sulphates | ≤300ppm | <300ppm | |||||
| Heavy metals | ≤20ppm | <20ppm | |||||
| Related substances | |||||||
| —Any impurity | ≤0.4% | <0.05% | |||||
| —Total impurities | ≤1.0% | <0.05% | |||||
| Assay | 98.5-101.0% | 99.6% | |||||
| USP36 | Identification | A: IR absorption; B: Tests of Chloride | Comply | ||||
| Absorbance of solution | ≤0.025% | 0.019 | |||||
| Limit of nitrate | No brown ring produced at the junction of the two layers | Comply | |||||
| PH | 2.7-3.4 | 3.2 | |||||
| Water | ≤5.0% | 2.34% | |||||
| Residue on ignition | ≤0.2% | 0.01% | |||||
| Chromatographic purity | ≤1.0% | 0.23% | |||||
| Residual solvent | |||||||
| —Methanol | ≤0.3% | 0.05% | |||||
| —Ethanol | ≤0.5% | <0.01% | |||||
| Assay | 98.0-102.0% | 99.6% | |||||
| Conclusions | This batches complies with the specification of BP2012 and USP36 | ||||||
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