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Subheading 2933.11 · Section VI

2933.11

Heterocyclic compounds; with nitrogen hetero-atom(s) only, containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, phenazone (antipyrin) and its derivatives

29 Organic chemicals
2933 Heterocyclic compounds with nitrogen hetero-atom(s) only
2933.11 With nitrogen hetero-atom(s) only, containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, phenazone (antipyrin) and its derivatives

Other subheadings under 2933

Source: Harmonized System 2022 edition (World Customs Organization), from the UN Comtrade classification list.