USPUSP-NF
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Nitrofurantoin
C8H6N4O5 (anhydrous) 238.16
 C8H6N4O5·H2O 256.18
 2,4-Imidazolidinedione, 1-[[(5-nitro-2-furanyl)methylene] amino]-;
 1-[(5-nitrofurfurylidene)amino]hydantoin
 [67-20-9] Monohydrate [17140-81-7]

DEFINITION

Nitrofurantoin is anhydrous or contains one molecule of water of hydration. It contains NLT 98.0% and NMT 102.0% of C8H6N4O5, calculated on the anhydrous basis.

USP REFERENCE STANDARDS FOR PURCHASE

USP Nitrofurantoin RS
USP Nitrofurazone RS
USP Nitrofurfural Diacetate RS
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