582-52-5－1,2:5,6-二-O-异亚丙基-α-D-呋喃葡萄糖,CAS:582-52-5 C12H20O6 / 260.28 MFCD00005544582-52-5－1,2:5,6-二-O-异亚丙基-α-D-呋喃葡萄糖,CAS:582-52-5 Product name: 1,2:5,6-Di-O-isopropylidene-α-D-glucofuranose; Diacetone-D-glucose CAS: 582-52-5              M.F.: C12H20O6              M.W.: 260.28 Batch No: 20130308         Quantity:18.3 kg Items Standards Results Appearance White crystalline power Positive Solubility Soluble in CHCl3 and less soluble in petroleum ether Complies Appearance of solution Dissolve0.5 gin 10 ml of water, and the solution should be clear Complies NMR and ESI-MS Should comply Complies Identification IR and TLC Positive Melting point 105℃ ~110℃ 108℃ ~110℃ Optical Activity [α]20/D (c=5 inwater) -18 o ~ -19o -18.4° Loss Weight On Dryness Max. 0.5% Complies Residue on ignition Max. 0.5% 0.05% Heavy metal Max. 20ppm Complies TLC (15%H2SO4-C2H5OH) One spot Complies Assay Min. 98% 99.2% References: 1. Karakawa M, Nakatsubo F, Carbohydr. Res. 2002, 337, 10, p951 2. Hung SC, Thopate SR, Puranik R, Carbohydr. Res. 2001, 23, 331, p369 3. Berndt DF, Norris P, Tetrahedron Lett. 2002, 43, p3961 4. Beil. 31, p155