- N,N-DI(ARYL) CYCLIC UREA DERIVATIVES AS ANTI-COAGULANTS
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N,N-di(aryl) cyclic urea derivatives, such as the compounds of the following formula: STR1 wherein R 1 is--C(NH)NH 2,--C(NH) N(H)OR 11,--C(NH)N(H)C(O)R 9, or--C(NH)N(H)C(O)OR 11 ; R 2 and R 3 are independently hydrogen, halo, lower alkyl, lower hal
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