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C 2925 (OTTO) 2-Chloroisonicotinic acid, 97% Cas 6313-54-8 - used to synthesize 11-oxo-11 H-pyrido[2,1-b]quinazoline-7-carboxylic acid1 and 3-oxospiro[(aza)isobenzofuran-1(3H),1′-cyclohexane]-4′-carboxamide derivatives.