COA:
Product name: 2,3,4-Tri-O-acetyl-1,6-anhydro-?-D-glucose    CAS: 1342-55-2Â
M.F.:Â C12H16O8Â Â Â Â Â Â M.W.:Â 288.26 Â Â Batch No: 20120208 Â Â Â Â Quantity:Â Â 25 g
Items | Standards | Results |
Appearance | White crystalline powder | Positive |
Solubility | Soluble in CHCl3 and insoluble in H2O | Complies |
Appearance of solution | Dissolve0.5 gin 10 ml of CHCl3, and the solution should be clear | Complies |
NMR and ESI-MS | Should comply | Complies |
Identification | IR and TLC | Positive |
Melting point | 100? ~110? | 108? ~110? |
Loss Weight On Dryness | Max. 0.5% | Complies |
Residue on ignition | Max. 0.5% | 0.05% |
Heavy metal | Max. 20ppm | Complies |
TLCÂ (15%H2SO4-C2H5OH) | One spot | Complies |
Assay | Min. 98% | 99.2% |