Xanthine-13C,15N2 is an isotopically labeled xanthine used as a tracer and internal standard in mass spectrometry, metabolic pathway studies, and other biochemical research. The compound contains one 13C atom and two 15N atoms to enable highly specific tracking and quantification in isotope-dilution assays. Supplied in small masses for analytical workflows, it is intended for research use only.
- Isotopic labeling: 13C and 15N2 for tracer experiments.
- Suitable as an internal standard for mass spectrometry workflows.
- Molecular weight 155.09 g·mol⁻1 and formula C4H4N2O2 (isotopically labeled).
- Supplied in small quantities appropriate for analytical assays.
- Recommended storage: powder -20°C for long term, 4°C for shorter term.