
structural formula
| business number | 026k |
|---|---|
| molecular formula | c7h7no2 |
| molecular weight | 137.14 |
| label |
3-methyl picolinate, nicotinic acid methyl eater, 3-pyridinecarboxylin acid methyl ester |
numbering system
cas number:93-60-7
mdl number:mfcd00006388
einecs number:202-261-8
rtecs number:qt1925000
brn number:113951
pubchem number:24886399
physical property data
1. properties: colorless crystals.
2. density (g/ml, 25/4℃): 1.137
3. relative vapor density (g/ml, air=1): undetermined
4. melting point (ºc): 42.5
5. boiling point (ºc, normal pressure): 2046. boiling point (ºc) (3 mmhg): 70~72℃ (399.966pa)
7 . refractive index: undetermined
8. flash point (ºc): 959. specific rotation (º): undetermined
10. autoignition point or ignition temperature (ºc): undetermined
11. vapor pressure (kpa, 25ºc): undetermined
12. saturated vapor pressure (kpa, 60ºc): undetermined
13. heat of combustion (kj/mol ): undetermined
14. critical temperature (ºc): undetermined
15. critical pressure (kpa): undetermined
16. oil and water (polymer) log value of the partition coefficient (alcohol/water): undetermined
17. explosion upper limit (%, v/v): undetermined
18. explosion lower limit (%, v/v ): undetermined
19. solubility: soluble in water, ethanol and benzene.
toxicological data
none
ecological data
none
molecular structure data
1. molar refractive index: 36.11
2. molar volume (cm3/mol): 120.5
3. isotonic specific volume (90.2k ): 306.2
4. surface tension (dyne/cm): 41.6
5. polarizability (10-24cm3): 14.31
compute chemical data
1. reference value for hydrophobic parameter calculation (xlogp): none
2. number of hydrogen bond donors: 0
3. number of hydrogen bond acceptors: 3
4. number of rotatable chemical bonds: 2
5. number of tautomers: none
6. topological molecule polar surface area 39.2
7. number of heavy atoms: 10
8. surface charge: 0
9. complexity: 125
10. number of isotope atoms: 0
11. determine the number of atomic stereocenters: 0
12. uncertain number of atomic stereocenters: 0
13. determine the number of chemical bond stereocenters: 0
14. uncertain chemistry��number of stereocenters: 0
15. number of covalent bond units: 1
properties and stability
1. found in flue-cured tobacco leaves and burley tobacco leaves.
storage method
this product should be kept sealed.
synthesis method
1. tobacco: bu, 9; fc, 40. prepared by passing hydrogen chloride gas through a hot methanol solution of niacin.
purpose
biochemical research. medical redness emitting agent.

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