Fourier transform and IR optoacoustic absorption data of (CD3OH)-C-13
were used to search for new FIR laser lines. We have used a waveguide
CO2 laser of 300 MHz tunability as the optical pumping source. We repo
rt the observation and characterization of 13 new lines. Three of thes
e lines are associated with absorbing transitions appertaining to the
weak (CD3)-C-13 asymmetric bending mode.