xanthene -9-carboxylic acid xanthene -9-carboxylic acid
structural formula
| business number | 01sq |
|---|---|
| molecular formula | c14h10o3 |
| molecular weight | 226.23 |
| label |
none |
numbering system
cas number:82-07-5
mdl number:mfcd00005059
einecs number:201-394-9
rtecs number:none
brn number:174414
pubchem number:24902145
physical property data
1. character: solid.
2. density (g/ml,25/4℃): unsure
3. relative vapor density ( g/ml,air =1): unsure
4. melting point (ºc): 217(decomposition)
5. boiling point (ºc,normal pressure): unsure
6. boiling point (ºc,5.2kpa): unsure
7. refractive index: uncertain
8. flashpoint (ºc): unsure
9. specific optical rotation (º): unsure
10. autoignition point or ignition temperature (ºc): unsure
11. vapor pressure (kpa,25ºc): unsure
12. saturated vapor pressure (0
11. not sure number of atomic stereocenters:0
12. determine chemical bonds number of stereocenters:0
13. not sure number of stereocenters of chemical bonds:0
14. covalent number of key units:1
properties and stability
none yet
storage method
save sealed in a cool, dry place.
synthesis method
xanthenol, the mixture of sodium cyanide, glacial acetic acid, ethanol and water is heated in a closed reaction tank and slowly raised to 95℃, pressure0.1-0.2mpa,reaction6h, got9-cyanoxanthene. then reflux with alkali solution20h, and then acidified with hydrochloric acid to obtain xanthene-9-carboxylic acid.
purpose
intermediate of the anticholinergic drug propantheline bromide.
style=”font-size: 9pt; font-family: arial; mso-font-kerning: 0pt”>9-cyanoxanthene. then reflux with alkali solution20h, and then acidified with hydrochloric acid to obtain xanthene-9-carboxylic acid.
purpose
intermediate of the anticholinergic drug propantheline bromide.
