A compound, mixture, or preparation containing a depressant or stimulant substance or of similar quantitative composition shown in federal regulations as an excepted compound or which is the same except that it contains a lesser quantity of a controlled substance or other substances which do not have a stimulant, depressant, or hallucinogenic effect, and which is restricted by law to dispensing on prescription is excepted from sections 7212, 7214, 7216, 7218, and 7220. Compliance with federal law respecting an excepted compound is considered compliance with this section.