TY - JOUR AU - Darwish, H. W. AU - Attia, M. I. AU - Zlotos, D. P. PY - 2012 DA - 2012// TI - New spectrofluorimetric methods for determination of melatonin in the presence of N-{2-[1-({3-[2-(acetylamino)ethyl]-5-methoxy-1H-indol-2-yl}methyl)-5-methoxy-1H-indol-3-yl]-ethyl}acetamide: a contaminant in commercial melatonin preparations JO - Chem Central J VL - 6 ID - Darwish2012 ER -