<unk>  is synthesized by methods analogous to that of amobarbital, the only difference being that the alkylation of α-ethylmalonic ester is carried out with 2-bromopentane in place of 1-bromo-3-methylbutane to give<unk> .
Pentobarbital
Amobarbital
Hexobarbital
Heptobarbital
Secobarbital
Ethallobarbital
Butobarbital
Sodium thiopental