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| Item | Standard | Result |
| Characteristics | A white or yellowish white powder .Odorless or almost.bygroscopic | Conforms |
| Identification | A:B:C The positive reaction. | Conforms |
| Solubility | Very soluble in water, insoluble in acetone , chloroform, ether. | Conforms |
| Specific optical rotation | +53.5°~ +59.0° | +58.0° |
| Acidity of alkalinity | 5.0~7.5 | 6.7 |
| Impurity A | 2%max | Conforms |
| Impurity C | 3% ~15% | Conforms |
| Any other impurity | not more than the area of the principal peak | Conforms |
| in the chromatogram obtained with RS(B)5% |
| Total other impurity | not more than 3times the area of the principal peak | Conforms |
| in the chromatogram obtained with RS(B)15% |
| Disregard limit | ae of the principal peak in the chromatogram | Conforms |
| obtained with RS(C)1% |
| Loss on drying (pct) | max8.0 | 5.0% |
| Sulphate | 27.0-31.0% | 28.4%max |
| Sulphated ash | 1% max | 0.2% |
| Microcount limit test | NMT 500 col/g | 10 col/g |
| Microcount-yeast and molds | NMT 10 col/g | Conforms |
| Microcount-Escherichia coli | Absent | Conforms |
| Microcount-Staphy lococcus aureus | Absent | Conforms |
| Microcount-Pseudo monas | Absent | |
| Assay | ≥680I.U./mg (DRY) | 687I.U./mg DRY 653I.U./mg MOIST |
Hubei Lvchang Chemicals Co.,Ltd.-- China-based, advanced chemical technology, medical technology as the professional body, is a research, development, production and management as one of the high-tech enterprises, the company is located in No. 9 Textile Main Road, Xiantao Industrual Zone, covers 200 acres, and 1 in the test, more than three with the production workshop (two chemical synthesis plants, two biological synthesis workshop, 160 workers of the company, which LED by renowned experts, with outstanding mechanics closely with professional and technical staff of 40, including 10 senior engineers and 15 engineers.
