Ref:KUHN Synthese des 6 7 Dimethyl 9 n amyl flavi 82J9CLYX
De Commission Historique
Weygand, Friedrich;Kuhn, Richard. "Synthese des 6.7-Dimethyl-9-n-amyl-flavins." Berichte der deutschen chemischen Gesellschaft (A and B Series) 67 (1934) : 1941-1942.
http://chemistry.europe.onlinelibrary.wiley.com/doi/10.1002/cber.19340671135
