2681916

Information

• Patent Grant
• 2681916

• References
• Source

• Patent Number

  2,681,916

• Date Filed

  Not available

• Date Issued

  Tuesday, June 22, 1954
  70 years ago

• CPC

  • C07D213/64 - attached in position 2 or 6
  • C07D213/68 - attached in position 4
  • C07D231/20 - One oxygen atom attached in positions 3 or 5
  • C07D231/22 - with aryl radicals attached to ring nitrogen atoms
  • C07D231/24 - having sulfone or sulfonic acid radicals in the molecule
  • C07D231/26 - 1-Phenyl-3-methyl-5- pyrazolones, unsubstituted or substituted on the phenyl ring
  • C07D231/32 - Oxygen atoms
  • C07D231/56 - Benzopyrazoles Hydrogenated benzopyrazoles
  • C07D239/32 - One oxygen, sulfur or nitrogen atom
  • C07D239/34 - One oxygen atom
  • C07D241/18 - Oxygen or sulfur atoms
  • C07D249/12 - Oxygen or sulfur atoms
  • C07D253/06 - 1,2,4-Triazines
  • C07D253/07 - with hetero atoms, or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
  • C07D271/113 - with oxygen, sulfur or nitrogen atoms, directly attached to ring carbon atoms, the nitrogen atoms not forming part of a nitro radical
  • C07D277/34 - Oxygen atoms
  • C07D277/68 - with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
  • C07D307/60 - Two oxygen atoms
  • C07D309/36 - with oxygen atoms directly attached to ring carbon atoms
  • C07D309/38 - One oxygen atom in position 2 or 4
  • C07D311/52 - Enol-esters or -ethers, or sulfur analogues thereof
  • C07D401/04 - directly linked by a ring-member-to-ring-member bond

• US Classifications

  • 549 - Organic compounds
  • 424 - Drug, bio-affecting and body treating compositions