Isothipendyl Hydrochloride from Mexico
Isothipendyl hydrochloride, a phenothiazine antihistamine, is used for allergies and as a sedative. Falls under HTS 2934.30.27.00 as a non-antipsychotic phenothiazine drug per the heading's 'other drugs' provision.
Duty Rate — Mexico → United States
6.5%
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
• Provide NMR/structural analysis confirming phenothiazine ring-system as required by heading 2934
• Document H1-receptor specificity to differentiate from antipsychotic D2-blocking phenothiazines
• Ensure EU REACH compliance documentation for novel antihistamine imports