3803178

Information

• Patent Grant
• 3803178

• References
• Source

• Patent Number

  3,803,178

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1974
  50 years ago

• CPC

  • C07D493/04 - Ortho-condensed systems
  • C07D311/58 - other than with oxygen or sulfur atoms in positions 2 or 4
  • C07D311/80 - Dibenzopyrans Hydrogenated dibenzopyrans
  • C07J73/008 - by two hetero atoms

• US Classifications

  • 549 - Organic compounds