USPUSP-NF
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Butabarbital Sodium
C10H15N2NaO3 234.23
 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-ethyl-5-(1- methylpropyl)-, monosodium salt;
 Sodium 5-sec-butyl-5-ethylbarbiturate [143-81-7]

DEFINITION

Butabarbital Sodium contains NLT 98.2% and NMT 100.5% of butabarbital sodium (C10H15N2NaO3), calculated on the dried basis.

USP REFERENCE STANDARDS FOR PURCHASE

USP Butabarbital RS
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