3658957

Information

• Patent Grant
• 3658957

• References
• Source

• Patent Number

  3,658,957

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1972
  52 years ago

• CPC

  • C07D307/77 - ortho- or peri-condensed with carbocyclic rings or ring systems
  • C07C49/643 - having three rings
  • C07C49/683 - having unsaturation outside the aromatic rings
  • C07C49/693 - polycyclic
  • C07C51/567 - by reactions not involving carboxylic acid anhydride groups
  • C07D209/72 - 4,7-Endo-alkylene-iso-indoles
  • C07D209/74 - with an oxygen atom in position 1
  • C07D209/76 - with oxygen atoms in positions 1 and 3

• US Classifications

  • 514 - Drug, bio-affecting and body treating compositions