BRIEFING
Guarana Seed Dry Extract. This proposal is based on the version of the monograph official as of November 1, 2020. On the basis of comments received, the following revisions are being proposed:
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Eliminate the use of Standard solution C in the Content of Caffeine and Flavonoids test.
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Add the use of USP Caffeine RS in Standard solution B in the Content of Caffeine and Flavonoids test.
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Add Table 2 to include the approximate relative retention times of the different analytes.
Additionally, minor editorial changes have been made to update the monograph to current USP style.
(BDSHM: M. Monagas)
Case ID—SUB-3128
USP REFERENCE STANDARDS FOR PURCHASE
USP (+)-Catechin RSUSP (−)-Epicatechin RS
USP Caffeine RS
USP Guarana Seed Dry Extract RS
USP Procyanidin B2 RS
