1. Short title This Act may be cited as the Stop the Importation and Trafficking of Synthetic Analogues Act of 2017 or the SITSA Act . 2. Establishment of Schedule A Section 202 of the Controlled Substances Act ( 21 U.S.C. 812 ) is amended— (1) in subsection (a), by striking five schedules of controlled substances, to be known as schedules I, II, III, IV, and V and inserting six schedules of controlled substances, to be known as schedules I, II, III, IV, V, and A ; (2) in subsection (b), by adding at the end the following: (6) Schedule A (A) In general The drug or substance— (i) has— (I) a chemical structure that is substantially similar to the chemical structure of a controlled substance in schedule I, II, III, IV, or V; and (II) an actual or predicted stimulant, depressant, or hallucinogenic effect on the central nervous system that is substantially similar to or greater than the stimulant, depressant, or hallucinogenic effect on the central nervous system of a controlled substance in schedule I, II, III, IV, or V; and (ii) is not— (I) listed or otherwise included in any other schedule in this section or by regulation of the Attorney General; and (II) with respect to a particular person, subject to an exemption that is in effect for investigational use, for that person, under section 505 of the Federal Food, Drug, and Cosmetic Act ( 21 U.S.C. 355 ) to the extent conduct with respect to such substance is pursuant to such exemption. (B) Predicted stimulant, depressant, or hallucinogenic effect For purpose of this paragraph, a predicted stimulant, depressant, or hallucinogenic effect on the central nervous system may be based on— (i) the chemical structure, structure activity relationships, binding receptor assays, or other relevant scientific information about the substance; (ii) (I) the current or relative potential for abuse of the substance; and (II) the clandestine importation, manufacture, or distribution, or diversion from legitimate channels, of the substance