Inventor

O'BRIEN DARRELL E

3 patents

Patents

3 patents

US4036840AJul 19, 1977

2-Substituted-s-triazolo[1,5a]pyrimidines

ICN PHARMACEUTICALS45 citations90

US4021556AMay 3, 1977

Xanthine oxidase inhibitors

ICN PHARMACEUTICALS34 citations90

US4093617AJun 6, 1978

3,5,7-Trisubstituted pyrazolo[1,5-a]pyrimidines

ICN PHARMACEUTICALS27 citations80