The aim of this work was to organize chemical data in a client-server envir
onment using Database Management System and Web fashion for the client inte
rface. To solve this ancient problem (for us) merging text data, reaction s
chemes, tridimensional structures, and NMR, CD, and UV spectra images, we h
ave based our implementation on a few fundamental points: no cost for the u
ser, availability of data via the Internet, standard and freeware software,
and a Web browser for the database inquiry. These functions are delivered
in a platform-independent manner via the Internet and are used by computati
onal experts and nonexperts alike. C-Glycosylporphyrins is the class of com
pounds chosen to test our applications. These results can be exportable for
many other classes of chemical compounds.