N-Acetyl-4-O-[2-(acetylamino)-2-deoxy-β-D-glucopyranosyl]-1,6-bis-O-(phenylmethyl)-α-muramic Acid is an intermediate in the synthesis of N-Acetyl-D-glucosaminyl-(1-4)-N-acetylmuramic Acid (A178230). N-Acetyl-D-glucosaminyl-(1-4)-N-acetylmuramic Acid is effective in activating human monocytes with subsequent destruction of tumor cells.