and medium polarity (DB-1701). In this work, for the first time, an approach was used where experimental retention indices and predicted retention indices were compared with those available in the literature. For a large number of confirmed UDMH transformation products there are no published values of retention indices even for the non-polar phase. However, it should be noted that in the course of this study some discrepancies were found with the records in the NIST database for the polar and nonpolar phases.