[en] Ultrahigh resolution NMR spectroscopy yields resolved satellites from one-bond and long-range ¹³C-¹⁵N scalar coupling in ¹³C NMR spectra of samples of natural isotopic composition, even though the natural abundance of ¹⁵N is only 0.37% and J(¹³C-¹⁵N) values are typically in the range 1 to 10 Hz. All possible ¹³C-¹⁵N satellites are resolved in ¹³C NMR spectra of pyridine and 2,6-dimethylpyridine, recorded with single-pulse excitation at 50.3 MHz in 10-mm sample tubes. As a bonus, each spectrum also yields secondary ¹⁵N isotope effects (relative to ¹⁴N) on ¹³C chemical shifts, estimates of ¹⁴N scalar contributions to the line widths of the major ¹³C resonances, values of one-bond and long-range ¹³C-¹³C scalar coupling constants, and secondary ¹³C isotope effects (relative to ¹²C) on ¹³C chemical shifts. Possible applications are discussed