American Cyanamid Company
Patent: US4302589 A1, 1981 ;

ELI LILLY AND COMPANY
Patent: EP1266897 A2, 2002 ;
Location in patent: Page 29 ;

Armer, Richard E.; Ashton, Mark R.; Boyd, Edward A.; Brennan, Chris J.; Brookfield, Frederick A.; Gazi, Lucien; Gyles, Shan L.; Hay, Philip A.; Hunter, Michael G.; Middlemiss, David; Whittaker, Mark; Xue, Luzheng; Pettipher, Roy
Journal of Medicinal Chemistry, 2005 , vol. 48, # 20 p. 6174 - 6177

NOVARTIS AG; NOVARTIS PHARMA GMBH
Patent: WO2007/65684 A2, 2007 ;
Location in patent: Page/Page column 25 ;
WO 2007/065684 A2

GRUeNENTHAL GMBH
Patent: WO2004/43899 A1, 2004 ;
Location in patent: Page 41; 42 ;