3857834

Information

• Patent Grant
• 3857834

• References
• Source

• Patent Number

  3,857,834

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  50 years ago

• CPC

  • C07F9/4015 - Esters of acyclic unsaturated acids
  • C07C45/516 - involving transformation of nitrogen-containing compounds to >C = O groups
  • C07C403/14 - having side-chains substituted by doubly-bound oxygen atoms
  • C07F9/3217 - Esters of acyclic unsaturated acids
  • C07J1/0025 - Esters
  • C07J7/0015 - not substituted in position 17 alfa
  • C07J13/007 - with double bond in position 17 (20)
  • C07J21/006 - at position 3
  • C07J61/00 - Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by contraction of only one ring by one or two atoms
  • C07C2101/16 - The ring being unsaturated

• US Classifications

  • 540 - Organic compounds
  • 568 - Organic compounds
  • 987 - Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system