N-Nitroso Diphenhydramine EP Impurity A CAT No: SZ-D054015 CAS No: 55855-43-1 Mol.F. : C16H18N2O2 Mol.Wt. : 270.3 Inv. Status: In Stock Rel. CAT No : SZ-D064012, SZ-D054015 CAS No:55855-43-1 Mol.F.: C16H18N2O2 Mol.Wt.: 270.3 Inv. Status: In Stock