4064-06-6,双丙酮半乳糖; 二丙酮-D-半乳糖; 1,2:3,4-O-双异丙叉-Α-D-半乳糖; 1,2:3,4-双邻异丙基-Α-D-吡喃半乳糖; 1,2:3,4-双邻异丙基-D-吡喃半乳糖; 1,2:3,4-二-氧-异丙叉基-Α-D-半乳糖; 1,2:3,4-二-O-异亚丙基-Α-D-吡喃半乳糖
CAS: 4064-06-6
C12H20O6 / 260.28
MFCD00063225
Product name: 1,2:3,4-Di-O-isopropylidene-D-galactopyranose
CAS: 4064-06-6 M.F.: C12H20O6 M.W.: 260.28
Items |
Standards |
Results |
Appearance |
A white or slightly yellowish syrup |
Positive |
Solubility |
Soluble in CHCl3 and less soluble in petroleum ether |
Complies |
Appearance of solution |
Dissolve0.5gin 10mL of CHCl3, and the solution should be clear |
Complies |
NMR and ESI-MS |
Should comply |
Complies |
Identification |
IR and TLC |
Positive |
Optical Activity [α]20/D (c = 3% in CHCl3) |
-58o ~ -60 o |
-59.2 o |
Refractive Index n20/D |
1.4 ~ 1.5 |
1.46 |
Density |
1.13 ~ 1.15 |
1.14 |
Residue on ignition |
Max. 0.5% |
0.05% |
Heavy metal |
Max. 20ppm |
Complies |
TLC (15%H2SO4-C2H5OH) |
One spot |
Complies |
Assay |
Min. 97% |
99.2% |
References:
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