29335300

HS code 2933.53.00.00 (Chapter 29 "Organic chemicals"; Heading 2933 "Heterocyclic compounds with nitrogen heteroatom(s) only"; Subheading 293353 "Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure") under the United States tariff schedule classifies "Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof". United States customs apply MFN rate of Free, Column 2 rate 50%. Statutory unit of measure: kg. 18 free trade agreement preferential rates are available for this code.