3829431

Information

• Patent Grant
• 3829431

• References
• Source

• Patent Number

  3,829,431

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1974
  50 years ago

• CPC

  • C07D471/14 - Ortho-condensed systems
  • C07D211/74 - Oxygen atoms
  • C07D223/30 - with hetero atoms directly attached to the ring nitrogen atom
  • C07D491/10 - Spiro-condensed systems

• US Classifications

  • 540 - Organic compounds