# How can I determine ""^13 "C NMR" signals?

Run the ""^13C{""^1H} $\text{NMR spectrum}$ first.............
And see this older answer. Symmetry is the key to rationalizing all spectroscopy. When we consider an organic molecule for its likely ""^1H or ""^13C{""^1H} $\text{NMR spectrum}$ it is useful to assume the maximum symmetry possible.