Tri-and tetra-substituted pteridine derivatives

• US 2,940,972 A
• Filed: 06/25/1958
• Issued: 06/14/1960
• Est. Priority Date: 06/27/1957
• Status: Expired due to Term

• Current Assignee: Roch, Josef
• Original Assignee: Roch, Josef
• Inventors: Roch, Josef
• Application Number:
  US03/744,353
• Time in Patent Office: 720 Days
• US Class Current: 544/81
• CPC Class Codes: C07D 475/00 Heterocyclic compounds containing pteridine ring systems
• CPC Class Codes: C07D 475/04 with a nitrogen atom directly attached in position 2
• CPC Class Codes: C07D 475/06 with a nitrogen atom directly attached in position 4
• CPC Class Codes: C07D 475/08 with a nitrogen atom directly attached in position 2

Claims

1. PTERIDINES HAVING THE STRUCTURAL FORMULA