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[13C4]-Allopurinol
[13C4]-Allopurinol
[13C4]-Azelaic acid
[13C,2H3]-Nisoldipine
[13C4]-Oxypurinol
[13C6, 2H2]-Fenticonazole
[13C4]-Landiolol
[13C,2H3]-Ranitidine
[13C4]-Landiolol metabolite M1
[13C,2H5]-Carbidopa
[13C4]-Landiolol metabolite M2
[13C4, 15N3]-5-Acetylamino-6-amino-3-methyluracil
[13C,2H3]-Metanephrine trifluoroacetate salt