3139431

Information

• Patent Grant
• 3139431

• References
• Source

• Patent Number

  3,139,431

• Date Filed

  Not available

• Date Issued

  Tuesday, June 30, 1964
  60 years ago

• CPC

  • C07D213/66 - having in position 3 an oxygen atom and in each of the positions 4 and 5 a carbon atom bound to an oxygen, sulfur or nitrogen atom
  • C07D253/075 - Two hetero atoms, in positions 3 and 5
  • C07D307/76 - having carbonic acyl radicals or their thio or nitrogen analogues directly attached to the hydrazino or hydrazono radical
  • C07D405/04 - directly linked by a ring-member-to-ring-member bond

• US Classifications

  • 544 - Organic compounds
  • 549 - Organic compounds