L-Fucose:
| General Information |
| Products name:L-Fucose |
| CAS NO :2438-80-4 |
| Molecular formula: C6 H12O5 |
| Molecular weight: 164,16 |
| Appearance:white crystalline powder |
| Solubility:>20 g/L (soluble in water) |
| BASIC ANALYSIS | |||
| Item | Standard | Test Results | |
| Identification | |||
| A | H-NMR:Comply with the structure | Complies | |
| B. | LC-MS:Comply with the structure | Complies | |
| C. | The IR spectrum of sample should be identical with that of reference standard; | Complies | |
| D. | HPLC-ESI-MS | Complies | |
| The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay. | |||
| Crystallinity | meets the requirements. | Complies | |
| Loss on drying | ≤2.0% | 0.19% | |
| Heavy metals | ≤10 ppm | <10ppm | |
| Water | ≤1.0% | 0.10% | |
| Sulphated ash | ≤0.5%, determined on 1.0 g. | 0.01% | |
| Related substances | Unspecified impurities: for each impurity | ≤0.10% | <0.10% |
| Total Impurity | ≤0.5% | 0.18% | |
| Purity | ≥99.0% | 99.70% | |
| Assay | 99.0%~101.0% (anhydrous substance). | 99.80% | |
| Microbiological Analysis | |||
| Total plate count | ≤1000cfu/g | Complies | |
| Yeast and Moulds | ≤100cfu/g | Complies | |
| E. Coli. | Absent | Negative | |
| Salmonella | Absent | Negative | |
| S.aureus | Absent | Negative | |
| Storage | Preserve in well-closed, light-resistant and airtight containers. | Complies | |
