Je. O'Brien et al., A simple aid to the assignment of C-13 NMR spectra, based on the visual differences caused by deuteriation, J CHEM R-S, (8), 1998, pp. 448-449
Selective deuteriation of complex polyheterocyclic compounds effects change
s in the intensities of the C-13 NMR signals which can be used to solve ass
ignment problems.