SPECTROSCOPIC CHARACTERIZATION AND PROOF OF STRUCTURE FOR DIMETHPRAMIDE

Earlier, we identified a police exhibit as dimethpramide or, more spec ifically, as hyl]-4-(dimethylamino)-2-methoxy-5-nitrobenxamide, a subs tance apparently known only in Russia and sold in tablet form as ''Dim etcarb''. Because no spectroscopic evidence appears to exist in the li terature in support of the structure assigned to dimethpramide and the corresponding 2-(dimethylamino)-4-methoxy positional isomer is not li sted in Chemical Abstracts, two dimensional H-1/C-13-NMR studies were undertaken to establish the structure unequivocally. With the structur e now firmly based one may proceed to attribute infrared, Raman and ma ss spectral features.