Doleschall; Lempert; 30; 1974; 3997-4008
1,2,4-triazines and condensed derivatives—XIV *1: Thermal and acid catalysed degradations of 3-alkylthio-6,7-dihydro-[1.2.4]Triazino[1.6-c]quinazolin-5-ium-1-olates
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http://dx.doi.org/10.1016/S0040-4020(01)97375-2