Is there a legal element in 21 U.S.C. 841(a)(1) that requires the CDS named in the indictment to be listed on the Controlled Substance Schedules at the time of the alleged offenses?

QUESTIONS PRESENTED | \.) Is there & leaal element in Zi U.9.c. BU©L) : thot requires the Ors, Named in the indictment to be listed on the Controlled substance, schedules ° a) At the Hime of the adleagd offenses, 1s the omission oF A" Controlled Sulostance” Grom ZV OSC. BAVAQLY a Latal defeck ta the indictmenté 3) Does the teem “Corrtralled substance orale \eop\ty exclude. & SUG, thot became scheduled OS & Controlled substance following, the period F alleged ochvity? x