3865879

Information

• Patent Grant
• 3865879

• References
• Source

• Patent Number

  3,865,879

• Date Filed

  Not available

• Date Issued

  Tuesday, February 11, 1975
  50 years ago

• CPC

  • C07C45/76 - with the aid of ketenes
  • C07C49/665 - a keto group being part of a condensed ring system
  • C07C49/675 - having three rings
  • C07C49/697 - containing six-membered aromatic rings
  • C07C49/755 - a keto group being part of a condensed ring system with two or three rings, at least one ring being a six-membered aromatic ring

• US Classifications

  • 568 - Organic compounds