3857842

Information

• Patent Grant
• 3857842

• References
• Source

• Patent Number

  3,857,842

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  50 years ago

• CPC

  • C07D473/34 - attached in position 6
  • C07D473/00 - Heterocyclic compounds containing purine ring systems
  • C07D473/18 - one oxygen and one nitrogen atom
  • C07D473/26 - with an oxygen, sulfur or nitrogen atom directly attached in position 2 or 6, but not in both

• US Classifications

  • 544 - Organic compounds
  • 548 - Organic compounds