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New derivatives of binary quaternary salts of condensed bi-hetero aromatic compounds containing cycloalkenecthiazole3,2-apyridine and cycloalkenecpyrido2,1-bthiazine system
New derivatives of binary quaternary salts of condensed bi-hetero aromatic compounds containing cycloalkenecthiazole3,2-apyridine and cycloalkenecpyrido2,1-bthiazine system