UHPLC-HRMS-based screening of purine and pyrimidine metabolites in cow milk collected across four different seasons

Supplemental material: Excel file containing a comprehensive list on the nucleotides and derivatives identified in the milk samples from different seasons, namely Fall 2023, Winter 2024, Spring 2024, and Summer 2024. The compounds are reported with different annotation-based information: m/z values, reference m/z values, formula, INCHIKEY, total annotation score, Signal-to-Noise values (S/N average), MS1 isotopic spectrum, MS/MS spectrum (where available), relative abundance value of each annotated metabolite.