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The chemical formula is C6H5N2COOH and has an empirical formula of C6H7NO3. It's a substance known as 575.804432-91-5, which is sometimes confused with 2-Amino-4-(ethoxymethyl)-6-methylpyridine-3-carboxylic acid.
575. 804432-91-5; 2-Amino-4-(ethoxymethyl)-6-methylpyridine-3-carboxylic acid