Heterocyclic compounds with nitrogen hetero-atom(s) only › Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure
293359Subheading
2933.59 — Other:
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Codes under heading 293359
Distinguish from heading:2707Oils…2936Provi…3004Medic…3606Ferro…2923Quate…
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