# How many unique ""^13"C" NMR signals are there?

A modern NMR spectrum usually examines the region between $\delta = - 20 \cdot \text{ppm}$ to $230 \cdot \text{ppm}$, i.e. $250 \cdot \text{ppm}$ in the ""^13C{""^1H} $N M R$ spectrum. I think that you could reasonably report a ""^13C{""^1H} $\text{NMR}$ to $0.1 \cdot \text{ppm}$ resolution. And so there are approx. $\left(250 \cdot \text{ppm")/(0.1*"ppm}\right) = 2500. \ldots \ldots .$
And so by this reasoning there are $2500$ individual ""^13C{""^1H} $\text{chemical shifts}$.....Usually, different spectrometers give slightly different $\text{NMR chemical shifts........}$ for the same compound.
Most of the time, when we examine a ""^13C{""^1H} $\text{spectrum}$ we are more interested in the number of signals we see, i.e. whether the proposed structure is consistent with the number of ""^13C signals observed, rather than trying to assign each signal to a particular carbon. Of course, there are a raft of higher end experiments you can perform, hoesy, roesy, nosy, hohohaha, hetcorr, hmqc, hmbc etc....