Lysergic acid is a key ergot-derived intermediate used in the synthesis of ergot-based pharmaceuticals and is also a federally controlled substance precursor under DEA Schedule III. China is the recorded US import source for this compound, which enters under tariff line 2939630000. Given its dual role as a pharmaceutical building block and a controlled precursor, every import transaction requires DEA import permits and FDA drug admissibility clearance. Customs brokers handling this commodity must be familiar with both the chemical controls framework and the drug import notification system.

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