d-(+)-galactose d-(+)-galactose

structural formula

• numbering system
• physical property data
• toxicological data
• ecological data
• molecular structure data
• computing chemical data
• more
  • properties and stability
  • storage method
  • synthesis method
  • purpose

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.