sodium 5-(2-methylpropyl)-6-oxo-5-prop-2-enyl-2-sulfanylidene-pyrimidin-4-olate

Buthalital sodium , the sodium salt of 5-allyl-5-isobutyl-2-thiobarbituric acid, Mr 262.31, is a water-soluble amorphous powder. The free acid , melts at 147 ?C. Buthalital sodium is prepared by condensation of thiourea with a malonic ester , .

A poison.

Buthalital sodium is eliminated so rapidly that slow injection does not produce anesthesia .