I.G. Farbenind.
Patent: DE512403 , 1925 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 17, p. 753

Pajouhesh, Hassan; Feng, Zhong-Ping; Ding, Yanbing; Zhang, Lingyun; Pajouhesh, Hossein; Morrison, Jerrie-Lynn; Belardetti, Francesco; Tringham, Elizabeth; Simonson, Eric; Vanderah, Todd W.; Porreca, Frank; Zamponi, Gerald W.; Mitscher, Lester A.; Snutch, Terrance P.
Bioorganic and Medicinal Chemistry Letters, 2010 , vol. 20, # 4 p. 1378 - 1383