d-(+)-galactose d-(+)-galactose
structural formula
| business number | 01a7 |
|---|---|
| molecular formula | c6h12o6 |
| molecular weight | 180.16 |
| label |
hydrolyzed lactose;, lactoglucose, dextrogalactose, biochemical reagents |
numbering system
cas number:59-23-4
mdl number:mfcd00151230
einecs number:200-416-4
rtecs number:lw5490000
brn number:1724619
pubchem number:24895021
physical property data
1. properties: white crystal or powder. odorless. slightly sweet.
2. density (g/ml, 25/4℃): undetermined
3. relative vapor density (g/ml, air=1): undetermined
4. melting point (ºc): 167℃, 118~120℃ (monohydrate)
5. boiling point (ºc, normal pressure): undetermined
6 . boiling point (ºc, 5.2kpa): not determined
7. refractive index: not determined
8. flash point (ºc): not determined
9 . specific rotation (º): α-d-galactose+150.7°→80.2° (water), β-d-galactose+52.8°→80.2° (water)
10. autoignition point or ignition temperature (ºc): not determined
11. vapor pressure (kpa, 25ºc): not determined
12. saturated vapor pressure (kpa, 60ºc): not determined
13. heat of combustion (kj/mol): undetermined
14. critical temperature (ºc): undetermined
15. critical pressure (kpa): undetermined
16. log value of oil-water (octanol/water) partition coefficient: undetermined
17. explosion upper limit (%, v/v): undetermined
18. lower explosion limit (%, v/v): undetermined
19. solubility: easily soluble in water, soluble in pyridine, slightly soluble in ethanol and glycerin.
toxicological data
1. reproductive toxicity: oral tdlo of female rats: 240mg/kg, conception takes 11-22 days; oral tdlo of female rats: 188mg/kg, conception takes 8-10 days; oral tdlo of female rats: 40mg/kg, conception occurs after 1-22 days; oral tdlo for female rats: 475mg/kg, conception occurs after 3-22 days; tdlo for female rats orally: 1000mg/kg, conception occurs after 3-22 days; tclo for female mice orally: 1260mg/kg , conception occurs after 1-21 days; oral tclo for female mice: 630mg/kg, conception occurs after 1-2 days; oral tclo for female mice: 16500mg/kg, conception occurs after 8-12 days; tdlo for female mice orally: 840mg/ kg, mated 14 days ago
ecological data
none yet
molecular structure data
1. molar refractive index: 37.25
2. molar volume (cm3/mol): 104.0
3. isotonic specific volume (90.2k): 312.7
4. surface tension (dyne/cm): 81.7
5. polarizability (10-24cm3): 14.76
compute chemical data
1. reference value for hydrophobic parameter calculation (xlogp): -2.6
2. number of hydrogen bond donors: 5
3. number of hydrogen bond acceptors: 6
4. number of rotatable chemical bonds: 1
5. number of tautomers:
6. topological molecular polar surface area (tpsa): 110
7. number of heavy atoms: 12
8. surface charge: 0
9. complexity: 151
10. isotopic atoms quantity: 0
11. determine the number of atomic stereocenters: 4
12. uncertain number of atomic stereocenters: 0
13. determine chemical bond positions number of stereocenters: 0
14. number of uncertain chemical bond stereocenters: 0
15. number of covalent bond units: 1
properties and stability
stable under normal temperature and pressure
storage method
this product should be kept sealed and dry.
synthesis method
1. lactose can be hydrolyzed into d(+)-galactose in acidic medium, then dissolved in water, and then crystallized with ethanol to obtain pure product.
purpose
1. liver function test. biological culture. biochemical research. organic synthesis.