. . "approved"@en . "3736-08-1"@en . . . . . . "Kohlstaedt, E. and Klingler, K.H.; U.S. Patent 3,029,239; April 10, 1962; assigned to Chemiewerke Homburg."@en . . . . "Fenetylline"@en . . . "Fenethylline"@en . . "Fenethylline hcl"@en . . . . . . . . . . "Fenethylline"@en . . "SID144206449"@en . . . . . . . . . .