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Subheading 2933.41 · Section VI

2933.41

Heterocyclic compounds; containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) in the structure, not further fused, levorphanol (INN) and its salts

29 Organic chemicals
2933 Heterocyclic compounds with nitrogen hetero-atom(s) only
2933.41 Containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) in the structure, not further fused, levorphanol (INN) and its salts

Other subheadings under 2933

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