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7-Acylamino-3-((3-(carboxymethyl) thio-1 H-1,2,4-triazol-5-yl) thiomethyl)-3-cephem-4-carboxylic acid derivatives, processes for their preparation and compositions containing them
7-Acylamino-3-((3-(carboxymethyl) thio-1 H-1,2,4-triazol-5-yl) thiomethyl)-3-cephem-4-carboxylic acid derivatives, processes for their preparation and compositions containing them
The invention provides [(4,5-dihydro-5-thioxo-1H-1,2,4-triazol-3-yl)thio]acetic acid, its alkali metal and ammonium salts. The compounds are useful as intermediates in cephalosporin synthesis.
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