Kind of a naive story, when<p>> Complicating matters more is the fact that many of the precursor chemicals are also used to make legal pharmaceutical drugs.<p>I suppose producers often need workarounds because every year some yet-legal precursors are found in drug labs.<p>So maybe China should go one step further. Start talking about R-30490, Ohmefentanyl, and other related drugs. Maybe strike a deal with Russia to ban its manufacture of 3-methylfentanyl.