7222. Phenetharbital

Nomenclature

CAS number: 357-67-5
5,5-Diethyl-1-phenyl-2,4,6(1H,3H,5H)-pyrimidinetrione; 5,5-diethyl-1-phenylbarbituric acid; 5,5-diethyl-2,4,6-trioxo-1-phenylhexahydropyrimidine; 1-phenyl-5,5-diethylbarbituric acid; N-phenylbarbital; phenidiemal; Fedibaretta; Pyrictal.
C14H16N2O3; mol wt 260.29.
C 64.60%, H 6.20%, N 10.76%, O 18.44%.

Description and references

Prepd from ethyl diethylmalonate and phenylurea: Fischer, Dilthey, Ann. 335, 334 (1904); Buck, J. Am. Chem. Soc. 58, 1284 (1936).

Chemical structure

Properties

Small, thick, glittering plates, mp 178°. Freely sol in hot alcohol, alkali.

Note

This is a controlled substance (depressant): 21 CFR, 1308.13.

Therapeutic Category

Anticonvulsant.

Keywords

Anticonvulsant