Cetirizine D4 dihydrochloride is a deuterated analog of the second-generation antihistamine Cetirizine, serving as a stable isotope-labeled internal standard. It is primarily used in quantitative LC-MS/MS analysis for pharmacokinetic, metabolic, and bioequivalence studies in both in vitro and in vivo research.
Molecular Weight:
465.83
Formula:
C21H23D4Cl3N2O3
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