3471520

Information

• Patent Grant
• 3471520

• References
• Source

• Patent Number

  3,471,520

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1969
  55 years ago

• CPC

  • C07D311/26 - with aromatic rings attached in position 2 or 3
  • C07D311/58 - other than with oxygen or sulfur atoms in positions 2 or 4
  • C07F9/65522 - condensed with carbocyclic rings or carbocyclic ring systems
  • Y10S514/841 - Contraceptive

• US Classifications

  • 548 - Organic compounds
  • 250 - Radiant energy
  • 514 - Drug, bio-affecting and body treating compositions
  • 544 - Organic compounds
  • 549 - Organic compounds
  • 558 - Organic compounds
  • 560 - Organic compounds
  • 562 - Organic compounds
  • 568 - Organic compounds
  • 987 - Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system