Figure 1.
Structures of phenytoin and its major metabolites, 5-(3-hydroxyphenyl)-5-phenylhydantoin (i.e., m-HPPH) and 5-(4-hydroxyphenyl)-5-phenyl-hydantoin (i.e., p-HPPH). The asterisk shows the location of the chiral center in m-HPPH or p-HPPH.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.