Paraldehyde Stabilized USP from Mexico
Paraldehyde is trimeric acetaldehyde forming six-membered oxygen heterocyclic ring, used as hypnotic pharmaceutical under USP standards. Stabilized with sulfuric acid traces per Chapter note 2(f), classified 2932.99.90.90. Excluded from aldehyde heading 2912 by cyclic polymer note 5.
Duty Rate — Mexico → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• DEA import permit required for hypnotic substance regardless of quantity
• Acid stabilizer <0.01% prevents 2811 inorganic acid classification
• Light-resistant amber glass mandatory per USP monograph