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| Items of Analysis | Standard of Analysis | Test Results |
| Appearance | Dark red crystals or dark red crystalline powder | Conform |
| Identification A | UV:Absorption maxima at 278±1nm，361±1nm and 550±2nm. | Conform |
| A361nm/A278nm: 1.70~1.90 A361nm/A550nm: 3.15~3.45 |
1.86 3.26 |
|
| Identification B | TLC:The principal spot in the chromatogram obtained with the test solution is similar in position, colour and size to the principal spot in the chromatogram obtained with the reference solution. | Conform |
| Loss on drying | ≤10% | 3.1% |
| Assay | 97-102% | 99.3% |
| Related substances | Total impurities ≤3% | 1.3% |
| Acetone | ≤5000 ppm | 619 ppm |
| The total aerobic microbial count | ≤1000 cfu/g | 65 cfu/g |
| The total combined yeasts/mould count | ≤100 cfu/g | ＜10 cfu/g |
| Conclusion | Conforms to Factory Standard | |
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