(6R,6''R,7R,7''R)-7,7''-[Methylenebis[imino-2,4-thiazolediyl[(2Z)-2-(methoxyimino)-1-oxo-2,1-ethanediyl]imino]]bis[3-[(1Z)-2-(4-methyl-5-thiazolyl)ethenyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid Bis[(2,2-dimethyl-1-oxopropoxy)methyl] Ester is used in the preparation of cefditoren pivoxil dimer.
