Naphth[1,2-d]-[1,2,3]-Oxadiazole-5-Sulfonic Acid from Germany
Naphth[1,2-d]-[1,2,3]-oxadiazole-5-sulfonic acid is a fused heterocyclic compound explicitly listed in HTS 2934.99.03.00, featuring an oxadiazole ring fused to naphthalene with a sulfonic acid substituent. This aromatic heterocyclic compound serves as a dye intermediate and reagent in organic synthesis. Chapter 29 classification applies to its chemically defined heterocyclic structure.
Duty Rate — Germany → United States
0%
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 CAS number and NMR spectra confirming exact naphthoxadiazole structure to match specific HTS naming
• Include stability data as sulfonic acids are corrosive; DOT shipping papers required for hazardous classification
• Document <1% heavy metal impurities to avoid Chapter 28 inorganic salt classification