CAS number： 59-30-3
Molecular formula： C19H19N7O6
molecular weight： 441.4
Chemical structure：
| Product name: | Folic acid | |
| Shelf Life | Four years | |
| Inspection Standard: | USP23 | |
| Tests | Standards | Results |
| Appearance | A yellow or orange crystalline powder | A yellow crystalline powder |
| Identification | Ratio: A256/A365: 2.80-3.00 | 2.86 |
| Water | Not more than 8.5% | 8% |
| Residue on ignition | Not more than 0.3% | 0.2% |
| Organic volatile impurities | Conforms | Conforms |
| Assay( anhydrous) | 95.0～102.0% | 95.4% |
| 95.4% | ||
| Conclusion : Complies with USP23 | ||
