3644347

Information

• Patent Grant
• 3644347

• References
• Source

• Patent Number

  3,644,347

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  53 years ago

• CPC

  • C07D501/04 - from compounds already containing the ring or condensed ring systems
  • C07D501/38 - Methylene radicals, substituted by nitrogen atoms Lactams thereof with the 2-carboxyl group Methylene radicals substituted by nitrogen-containing hetero rings attached by the ring nitrogen atom Quaternary compounds thereof

• US Classifications

  • 540 - Organic compounds