The rynthork and NYR relaxation propertler of 4-(K methylpyrrolkllno) blcyck [9.2. 1] octan- Sone triflate (321) are drscrlbed. The u8@ of lsCO-enrlched 321 as a lSC intensity reference I8 Justified and demonstrated. The dominant lSC peak In 321-1sC0 k 217 ppm, far from mod other 13C chemlcai rMlkotdiamagnetkorgalccompoumk. Hence, thklntendty rderew peak avoid8 peak overlap probkmsfor most organk compoundr.