Items |
Specification |
Assay (anhydrous basis) |
98.5~101.5% |
Identification (NMR) |
Conforms to the standard |
Specific rotation[α]20D |
-2.4° ~ -2.95° |
PH |
4.5~6.5 |
Water |
≤2.0% |
Solubility (H2O,10%) |
Clear |
Stability |
Dry and light protected storage; stable under normal usage |
Related substance (TLC) |
Single spot |
Residual solvent(ethanol) |
≤1.0% |
Heavy metals(as Pb) |
≤10ppm |
Appearance |
White powder |
Grupos de Producto : Suplemento de nootropos