USPUSP-NF
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Caffeine
C8H10N4O2·H2O 212.21
C8H10N4O2 194.19
1H-Purine-2,6-dione, 3,7-dihydro-1,3,7-trimethyl-;
1,3,7-Trimethylxanthine
[58-08-2] Monohydrate [5743-12-4]

DEFINITION

Caffeine is anhydrous or contains one molecule of water of hydration. It contains NLT 98.5% and NMT 101.0% of C8H10N4O2, calculated on the anhydrous basis.

USP REFERENCE STANDARDS FOR PURCHASE

USP Caffeine RS
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