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Methods of making ureas and guanidines, including, terazosin, prazosin, doxazosin, tiodazosin, trimazosin, quinazosin, and bunazosin (exemplary of 2- substituted quinazoline compounds), and meobentine, and bethanidine and intermediates therefor

US Patent 5675006 · Granted Oct 7, 1997

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