Standard input-output norms require imported inputs to match declared manufacturing use and impose applicant compliance obligations.

Standard input-output norms for Allopurinol list specified chemical inputs (Allopurinol, Cyano Acetamide, Triethyl Ortho-formate, Formamide, Morpholine, Hydrazine Hydrate) and require determination of the proportion of inputs used in manufacture; applicants must ensure imported goods correspond to inputs used or required in the export product, imposing an import compliance obligation linked to manufacturing use.

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