3821240

Information

• Patent Grant
• 3821240

• References
• Source

• Patent Number

  3,821,240

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • C07D249/20 - with aryl radicals directly attached in position 2
  • C07D249/22 - Naphthotriazoles
  • C08K5/35 - having also oxygen in the ring
  • C09B35/34 - the tetrazo component being heterocyclic

• US Classifications

  • 548 - Organic compounds
  • 252 - Compositions