[13C15]-Quercetin
[13C15]-Quercetin
[2H3]-N-Desmethylzolmitriptan
[13C6]-Mitotan metabolite
[2H4]-17alpha-Ethynylestradiol
[2-13C]-4-Aminobutyric acid
[1,2-13C2]-4-Aminobutyric acid
[2H7]-4-Hydroxypropranolol hydrochloride
[2H7]-4-Hydroxypropranolol sulfate
[2H5]-N-Desisopropylpropranolol hydrochloride
[13C6]-Kaempferol
[2H6]-Lopinavir
[13C2]-3-Hydroxy-1-methyl-propylmercapturic acid