2198374

Information

• Patent Grant
• 2198374

• References
• Source

• Patent Number

  2,198,374

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1940
  84 years ago

• CPC

  • C07D307/77 - ortho- or peri-condensed with carbocyclic rings or ring systems
  • C07C2/861 - the non-hydrocarbon contains only halogen as hetero-atoms
  • C07C2/862 - the non-hydrocarbon contains only oxygen as hetero-atoms
  • C07C2/864 - the non-hydrocarbon is an alcohol
  • C07C13/32 - with condensed rings
  • C07C13/573 - with three six-membered rings
  • C07C13/58 - Completely or partially hydrogenated anthracenes
  • C07C13/66 - the condensed ring system contains only four rings
  • C07C37/14 - by addition reactions
  • C07C37/16 - by condensation involving hydroxy groups of phenols or alcohols or the ether or mineral ester group derived therefrom
  • C07C37/18 - by condensation involving halogen atoms of halogenated compounds
  • C07C39/17 - containing other rings in addition to the six-membered aromatic rings
  • C07C41/30 - by increasing the number of carbon atoms
  • C07D311/92 - Naphthopyrans Hydrogenated naphthopyrans
  • C07D333/54 - with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
  • C07C2101/14 - The ring being saturated
  • C07C2102/10 - The other ring being six-membered (e.d. tetraline)
  • C07C2103/24 - (Hydrogenated) anthracenes
  • C07C2103/42 - containing only six-membered rings
  • C07C2527/053 - Sulfates or other compounds comprising the anion (SnO3n+1)2-

• US Classifications

  • 568 - Organic compounds
  • 549 - Organic compounds
  • 562 - Organic compounds
  • 585 - Chemistry of hydrocarbon compounds