West Coast Leaf, 23 Sep 2010 – The Michigan Supreme Court issued a landmark opinion June 8 that 11-carboxy-THC, a byproduct of THC, is not a schedule 1 controlled substance under state law. People v Feezel* reversed the Court of Appeals, vacated the convictions, and sent the case back to the trial court by overturning the 2006 Derror ruling.