HS Code for Clonazepam

Clonazepam is classified under HS code 2933.91, which specifically identifies heterocyclic compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. As a benzodiazepine derivative, it falls under the broader category of heterocyclic compounds with nitrogen hetero-atom(s) only. The classification is determined by the chemical structure of the molecule, which includes a diazepine ring. According to the General Rules of Interpretation (GRI) 1, classification is determined by the terms of the headings and any relative section or chapter notes. Chapter 29 covers organic chemicals, and heading 2933 is dedicated to heterocyclic compounds with nitrogen hetero-atom(s) only. Subheading 2933.91 is a specific provision for several benzodiazepines, including clonazepam, as listed by the International Nonproprietary Name (INN). This classification applies to the pure chemical substance or bulk powder. If the product is prepared in measured doses or in forms or packings for retail sale as a medicament, it would transition to Chapter 30. However, for international trade of the active pharmaceutical ingredient (API), 2933.91 is the definitive code for customs purposes.

Products Included

• Clonazepam bulk powder (API)
• Clonazepam USP/BP grade chemical
• Rivotril bulk substance
• Klonopin active ingredient
• Clonazepam reference standards

Common Misclassification

Clonazepam is frequently misclassified under HS code 3004.90, which covers medicaments consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses. While finished tablets fall under 3004, the raw chemical substance must stay in 2933.91. Another common error is using 2933.99, which is the residual category for other heterocyclic compounds; however, because clonazepam is explicitly named in the 2933.91 subheading, the more specific code must be used per GRI 3(a).

FAQ

What is the HS code for Clonazepam?

The specific HS code for the chemical substance Clonazepam is 2933.91.

Is Clonazepam considered a controlled substance for shipping?

Yes, Clonazepam is regulated under the 1971 Convention on Psychotropic Substances. While the HS code identifies the chemical nature, additional permits and documentation are required for its legal transport across international borders.