If you use MyCompoundID MS/MS search in your research, please cite the following publication.
MyCompoundID MS/MS Search: Metabolite Identification Using a Library of Predicted Fragment-Ion-Spectra of 383,830 Possible Human Metabolites Tao Huan, Chenqu Tang, Rong Hong, Yi Shi, Guohui Lin and Liang Li (Anal. Chem. In press (DOI: 10.1021/acs.analchem.5b03126). (Open Access Article: download a copy)