T. Fujii et T. Itaya, Systematic tables of mono- and poly-N-methylated adenines: Acid dissociation constants and UV and NMR spectral data, HETEROCYCLE, 51(9), 1999, pp. 2255-2277
Available data regarding acid dissociation constants and UV, H-1 NMR, and C
-13 NMR spectra of all the five positional isomers (2-6) of N-x-methyladeni
ne, 10 known isomers (7-16) of N-x,N-y-dimethyladenine, nine known isomers
(17-25) of N-x,N-y,N-z-trimethyladenine, and five known isomers (26-30) of
tetra-N-methylated adenine are tabulated for convenience of ready compariso
n, with 117 reference citations.