The spectra of ozone in the region 2300-2600 cm(-1) have been recorded with the high-resolution Fourier transform spectrometer of Reims. A White-type cell with a length of 36 m and pressure of 50 Torr of ozone has been used. This region corresponds mainly to the weak bands nu(1) + 2 nu(2) and 2 nu(2) + nu(3), which were previously analyzed with a much lower amount of ozone. Now high values of J and K-a have been observed up to 55 and 11, respectively. The final fit on the 615 energy levels is very satisfactory, 0.39 X 10(-3) cm-l, equal to experimental accuracy. Good agreement is also obtained for line intensities. Furthermore, the two difference bands 3 nu(3) - nu(2) and nu(1) + 2 nu(3) - nu(2) have been observed for the first time and their transition moments are given. (C) 1995 Academic Press, Inc.