Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof
Heterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Products classified under HTS 2933.55.00.00
Methaqualone Hydrochloride
Methaqualone hydrochloride is the salt form of methaqualone, a quinazolinone derivative containing a pyrimidine ring, used historically as a sedative-hypnotic. It falls under HTS 2933.55.00.00 as a specifically named compound with nitrogen hetero-atom(s) only in a pyrimidine structure, per chapter notes limiting classification to separate chemically defined organic compounds. This pure pharmaceutical salt is imported for research or controlled medical purposes.
Methaqualone Base (Pure)
Pure methaqualone (INN) is a synthetic quinazolinone sedative with a fused pyrimidine ring structure. Classified under HTS 2933.55.00.00 for its specific naming as a heterocyclic nitrogen compound with pyrimidine ring, adhering to chapter notes for separate chemically defined organic compounds. Imported primarily for forensic analysis or pharmaceutical reference standards.
Mecloqualone Mesylate Salt
Mecloqualone mesylate is a salt of mecloqualone (INN), a non-benzodiazepine sedative featuring a pyrimidine ring in its heterocyclic structure. It qualifies for HTS 2933.55.00.00 as a named compound or salt thereof, fitting chapter notes for organic compounds with nitrogen hetero-atoms only. Used in analytical chemistry and toxicology studies.
Loprazolam Ethanesulfonate
Loprazolam ethanesulfonate is the sulfonate salt of loprazolam (INN), a benzodiazepine-like hypnotic with pyrimidine ring structure. Under HTS 2933.55.00.00 for named compounds containing pyrimidine or piperazine rings, as per chapter definitions for heterocyclic nitrogen compounds. Strictly for laboratory and reference use.
Zipeprol Dihydrochloride
Zipeprol dihydrochloride is the di-salt form of zipeprol (INN), an antitussive agent with piperazine ring in its heterocyclic nitrogen-only structure. It is classified in HTS 2933.55.00.00 as a specifically enumerated compound or salt, compliant with chapter notes for pure organic compounds. Imported for pharmacological research.
Methaqualone Sulfate
Methaqualone sulfate salt provides stability for the sedative methaqualone (INN) with its characteristic pyrimidine ring. Falls under HTS 2933.55.00.00 per salts thereof provision for named heterocyclic compounds with nitrogen hetero-atoms. Used exclusively in certified lab settings.
Mecloqualone Free Base
Pure mecloqualone free base (INN) is a heterocyclic compound featuring pyrimidine ring, used as reference standard. HTS 2933.55.00.00 applies to this chemically defined named substance with nitrogen hetero-atoms only. For analytical and forensic import.
Loprazolam Base
Loprazolam (INN) base is a hypnotic agent with pyrimidine-containing heterocyclic structure. Classified in HTS 2933.55.00.00 as a listed compound, following chapter notes for pure organic heterocycles with nitrogen only. Research chemical import.
Zipeprol Hydrochloride
Zipeprol hydrochloride salt contains piperazine ring in its structure, qualifying as named INN under HTS 2933.55.00.00 for heterocyclic nitrogen compounds. Chemically defined salt for import in research quantities.
Methaqualone Phosphate
Methaqualone phosphate is a stable salt form of the named INN compound with pyrimidine ring. HTS 2933.55.00.00 covers salts thereof as separate chemically defined products.