Phenazone (antipyrin) and its derivatives
Heterocyclic compounds with nitrogen hetero-atom(s) only. > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Phenazone (antipyrin) and its derivatives > Phenazone (antipyrin) and its derivatives
Duty Rate (from China)
Products classified under Tariff item 2933.11
Aminophenazone
Aminophenazone is a derivative of phenazone (antipyrin) with an amino group substitution, retaining the unfused pyrazole ring structure. It is used primarily as an intermediate in pharmaceutical synthesis. This compound falls under tariff item 2933.11.00 as a phenazone derivative.
2933.11.00Isopropphenazone
Isopropphenazone is an isopropyl-substituted derivative of phenazone, maintaining the unfused pyrazole ring. It serves as a pharmaceutical intermediate in the synthesis of active ingredients. This product is classified under tariff item 2933.11.00 as a phenazone derivative.
2933.11.00Metamizole Sodium (Analgin)
Metamizole sodium, also known as Analgin, is a water-soluble sodium salt of a phenazone derivative. As an inorganic salt of an organic compound, it is classified with the parent phenazone compound under Chapter Note 5(C)(1). It is used as a potent analgesic and antipyretic.
2933.11.00N-Methylphenazone
N-Methylphenazone is an N-alkylated derivative of phenazone, retaining the unfused pyrazole ring. It is used in organic synthesis and as a pharmaceutical intermediate. This compound is classified under tariff item 2933.11.00 as a phenazone derivative.
2933.11.00Phenazone (Antipyrine)
Phenazone, also known as antipyrine, is a pyrazolone derivative with an unfused pyrazole ring. It has historical use as an analgesic and antipyretic. This product is explicitly named in tariff item 2933.11.00.
2933.11.00Phenazone Salicylate
Phenazone salicylate is a salt formed between phenazone and salicylic acid, used in topical analgesic preparations such as ear drops. Under Chapter Note 5(C)(2), salts formed between organic compounds are classified with the compound occurring last in numerical order, which is phenazone. It falls under tariff item 2933.11.00.
2933.11.00Phenzone (Phenylethylphenazone)
Phenzone, also known as phenylethylphenazone, is a phenazone derivative with a phenylethyl group, retaining the unfused pyrazole ring. It is used in anti-inflammatory formulations. This compound is classified under tariff item 2933.11.00 as a phenazone derivative.
2933.11.00Propyphenazone
Propyphenazone is an N-propyl derivative of phenazone, maintaining the unfused pyrazole ring. It is used in combination analgesics. This product is classified under tariff item 2933.11.00 as a phenazone derivative.