Crina Cismas Thanasis Gimisis, exo-N-[2-(4-Azido-2,3,5,6-tetrafluorobenzamido)ethyl]-dC: a novel intermediate in the synthesis of dCTP derivatives for photoaffinity labelling, TETRAHEDRON LETTERS, (49), 1336--1339, 2008, ELSEVIER BV, 0040-4039