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Subheading 2933.59 · Section VI

2933.59

Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, (other than malonylurea and its derivatives, loprazolam, mecloqualone, methaqualone, zipeprol, and salts thereof) n.e.c. in 2933.5

29 Organic chemicals
2933 Heterocyclic compounds with nitrogen hetero-atom(s) only
2933.59 Containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, (other than malonylurea and its derivatives, loprazolam, mecloqualone, methaqualone, zipeprol, and salts thereof) n.e.c. in 2933.5

Other subheadings under 2933

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