3840526

Information

• Patent Grant
• 3840526

• References
• Source

• Patent Number

  3,840,526

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1974
  50 years ago

• CPC

  • C07J71/0005 - Oxygen-containing hetero ring
  • C07C45/56 - from heterocyclic compounds
  • C07C45/567 - with sulfur as the only hetero atom
  • C07J1/0007 - not substituted in position 17
  • C07J1/0022 - the substituent being an OH group free esterified or etherified
  • C07J1/0037 - the substituent in position 17 alfa being a saturated hydrocarbon group
  • C07J1/0048 - Alkynyl derivatives
  • C07J7/002 - not substituted in position 16
  • C07J9/00 - Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms
  • C07J33/007 - Cyclic thioketals

• US Classifications

  • 540 - Organic compounds
  • 552 - Organic compounds
  • 568 - Organic compounds