<unk>  (Rutonal), also known as phenylmethylbarbituric acid is a barbiturate derivative. It has often been confused with methylphenobarbital because both drugs contain a methylphenyl moiety and are overall very similar in structure.
Heptobarbital
Amobarbital
Pentobarbital
Secobarbital
Hexobarbital
Ethallobarbital
Butobarbital
Phenobarbital