The establishment of a Gas Phase Conformational Library (GPCL) is a steps towards developing a data set for the validation of gas-phase conformational search engines. GPCL, currently encompasses the full ensembles of 20 small molecules. This library, constructed through our standard QM workflow to compute CCS values, is a freely available dataset for validating various conformational search engines. Moreover, the data set can be used to refine conformational generation methods, thereby enhancing the reliability of computational predictions. While the GPCL only contains 20 molecules it can be readily expanded using our standard workflow to generate additional members of any molecule of interest, significantly expanding the library's utility.