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归类说明：头抱拉啶是化学成分单一的有机化工品，可以用来配制先锋霉素药品，所以又称为先锋霉素原药。由于它是纯净的有机化工品，还未配制成药品.不能按药品归入第30章，而要按化学成分归入第29章。头抱拉啶属抗菌素类化工品，应归入第13分章，查阅该分章的品目条文，并按具体列名归入子目29419054
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