d(-)-ribose d(-)-ribose

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:50-69-1

mdl number:mfcd00135453

einecs number:200-059-4

rtecs number:vj2275000

brn number:1723081

pubchem number:24901881

physical property data

1. properties: white crystal or crystalline powder, slightly aromatic. 2. density (g/ml, 25/4℃): undetermined

3. relative vapor density (g/ml, air=1): undetermined

4. melting point (ºc): 955. crystal phase standard combustion heat (enthalpy) (kj·mol^-1): -2345.66. crystal phase standard claim heat (enthalpy) (kj·mol^-1): – 1051.17. refractive index: -21 ° (c=1, h2o)

8. flash point (ºc): undetermined

9. specific rotation (º): -20.8 º (c= 4, h2o)

10. autoignition point or ignition temperature (ºc): undetermined

11. vapor pressure (kpa, 25 ºc): undetermined

12. saturated vapor pressure (kpa, 60 ºc): undetermined

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. explosion lower limit (%, v/v): undetermined

19. solubility: can be dissolved in water and methanol easily absorb moisture, tend to be supersaturated in water, and are slightly soluble in ethanol.

toxicological data

1. reproductive toxicity: intrauterine tdlo of female mice: 5045ug/kg, conception occurs two days later; 2. mutagenicity: dna inhibition detection system: human lymphocytes: 50mmol/l; mutation testing system – not other specifiedtest systems: human lymphocytes: 30mmol/l

ecological data

none

molecular structure data

1. molar refractive index: 31.05

2. molar volume (cm³/mol): 89.2

3. isotonic specific volume (90.2k): 266.0

4. surface tension (dyne/cm): 78.7

5. polarizability ( 10-24cm3): 12.31

compute chemical data

1. reference value for hydrophobic parameter calculation (xlogp): none

2. number of hydrogen bond donors: 4

3. number of hydrogen bond acceptors: 5

4. number of rotatable chemical bonds: 4

5. number of tautomers: 5

6. topological molecule polar surface area 98

7. number of heavy atoms: 10

8. surface charge: 0

9. complexity: 104

10. number of isotope atoms: 0

11. determine the number of atomic stereocenters: 3

12. uncertain number of atomic stereocenters: 0

13. determine the number of chemical bond stereocenters: 0

14. number of uncertain chemical bond stereocenters: 0

15. number of covalent bond units: 1

properties and stability

none

storage method

store in a cool place after airtight packaging.

synthesis method

use d-glucose as raw material, add bacteria or bacillus subtilis for fermentation, and separate and refine the fermentation products.

preservation of bacterial strains → activated slope → seed tank culture → fermentation → fermentation broth →

flocculation → supernatant → cationic resin exchange → activated carbon decolorization → concentration

→refined→crystallized→product

purpose

d-ribose plays an important role in the pharmaceutical industry, food industry, agriculture and life science research. in the pharmaceutical industry, it is a very useful biochemical reagent, pharmaceutical and pharmaceutical synthesis intermediate. in the food industry, it can be used as a sweetener and condiment, as well as a crop growth promoter and feed additive.