3557167

Information

• Patent Grant
• 3557167

• References
• Source

• Patent Number

  3,557,167

• Date Filed

  Not available

• Date Issued

  Tuesday, January 19, 1971
  54 years ago

• CPC

  • C07D263/04 - having no double bonds between ring members or between ring members and non-ring members
  • C07D265/06 - not condensed with other rings
  • C07D267/06 - having the hetero atoms in positions 1 and 3

• US Classifications

  • 554 - Organic compounds
  • 560 - Organic compounds