During the present analyze, BB-22 and BB-22 three-carboxyindole in genuine human urine specimens are actually quantified for the first time by a delicate LC–QTRAP tandem mass spectrometry (MS/MS) system that was used Nearly in precisely the same way for 5F-PB-22 along with other six SCs in human urine specimens [six, seven] and 5F-NNEI in human s