Ott, Sonja C, Kristiana  Jenett-Siems, Karsten  Siems, Frank  Mueller, Monika  Hilker, and Eckart  Eich. 2013. ?Ipvelutine, 7ß-Acetoxy-2-Alpha-(Tigloyloxy)Tropane, An Unusual Tropane Alkaloid From Ipomoea Velutina E. Br. (Convolvulaceae)?. Scientia Pharmaceutica 81. Scientia Pharmaceutica: 543 - 548. doi:org.10.3797/scipharm.1303-13.