[13C3,2H,15N]-Nicotinic acid
[13C3,2H,15N]-Nicotinic acid
[2H5]-Reboxetine
[13C, 2H3]-Naftifine hydrochloride
[13C5,15N]-1-Nitroso-DL-proline
[13C3]-Flumequine
[13C,2H3]-Pentedrone hydrochloride
[13C]-Famotidine
[2H7]-Oxadiazon
[2H4]-Descarboethoxyloratadine
[13C6]-JWH018-5-Hydroxypentyl metabolite
[2H3]-Diltiazem
[U-Ring-13C6]-4-Hydroxy-3-methoxybenzoic acid