2H-Tetrazole-5-thiol is an intermediate for the synthesis of (6R-trans)-7-Amino-8-oxo-3-[(1H-tetrazol-5-ylthio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid (A618830), which is an impurity of Cefoperazone (C242900). Cefoperazone impurity D.
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