<h1>Suspension of standard input output norms for acetazolamide specifying precursor quantities and requiring import and export correspondence verification</h1> Standard Input-Output Norms for acetazolamide list specified input types and quantities for producing 1 kg of the drug (including hydrazine hydrate, ammonium thiocyanate, glacial acetic acid, activated charcoal, and hypophosphorous acid in stated proportions); the SION was suspended by public notice dated 03-05-2024. The norms serve to determine allowable input proportions for manufacturing resultant products, and applicants must ensure imported goods correspond to those used or required in the declared export product.