In makes an attempt to bypass these laws, more recent compounds have emerged with related chemical backbones to Formerly controlled medicines, but made up of quite a few modifications and additional purposeful groups. These new substances can have considerably diverse Organic outcomes from All those

, 1998). They have been examined With this operate to supply a foundation for comparison With all the structurally progressive compounds shown in Fig. 1. To aid in the event of forensic markers and to examine metabolic transformations, preliminary Investigation of urinary metabolites on the three no