lanosterol lanosterol

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:79-63-0

mdl number:mfcd00021108

einecs number:201-214-9

rtecs number:oe3360000

brn number:2226449

pubchem number:24896417

physical property data

1. properties: white crystal.

2. density (g/ml, 20/4℃): 0.98

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

4. melting point (ºc): 138～140℃

5. boiling point (ºc, normal pressure) uncertain

6. boiling point (ºc, 5.2kpa): uncertain confirm

7. refractive index _(n²⁰_d): 1.53

8. flash point (ºc): 221.1

9. specific rotation (º): [α]_d²⁰ +62.0° (in chloroform).

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

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

12. saturation vapor pressure (kpa, 60ºc): uncertain

13. heat of combustion (kj/mol): uncertain

14. critical temperature (ºc): uncertain

15. critical pressure (kpa): uncertain

16. log value of oil-water (octanol/water) partition coefficient: uncertain

17. explosion upper limit (% , v/v): uncertain

18. lower explosion limit (%, v/v): uncertain

19. solubility: soluble in ether, ethanol, chloroform, insoluble yu shui

toxicological data

mammalian gastrointestinal tdlo: 1819 ug/kgsex/duration

it is the precursor of many sterol compounds.

ecological data

none yet

molecular structure data

1. molar refractive index: 133.40

2. molar volume (cm³/mol): 431.8

3. isotonic specific volume (90.2k ): 1071.9

4. surface tension (dyne/cm): 37.9

5. polarizability (10^-24cm³): 52.88

compute chemical data

1. number of hydrogen bond donors: 1

2. number of hydrogen bond acceptors: 1

3. number of rotatable chemical bonds: 4

4. topological molecular polar surface area (tpsa): 20.2

5, number of heavy atoms: 31

6, surface charge: 0

7, complexity: 767

8, number of isotope atoms: 0

9. determine the number of atomic stereocenters: 7

10. uncertain number of atomic stereocenters: 0

11. determine the number of chemical bond stereocenters: 0

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12. the number of uncertain stereocenters of chemical bonds: 0

13. the number of covalent bonding units: 1

properties and stability

1. found in flue-cured tobacco leaves.

storage method

this product should be sealed and stored in a cool place. storage temperature-20ºc

synthesis method

1. obtain crystals from methanol-acetone and needle crystals from ethanol.

2. tobacco: fc, 8; prepared by cyclization of squalene.

purpose

for research on arteriosclerosis.