Certificate of Analysis Library

Verify your exact vial

Every production run is tested independently, and the certificate for that run is published here. Find the lot number printed on your vial to pull up the analysis for what's in your hand — not a generic sample.

Lot DS100001Currently shipping10mgTested Aug 202699.16% HPLC
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Can't find your lot, or the certificate doesn't match what you expected? Tell us. Our Purity Guarantee stands behind every batch: if independent testing doesn't confirm the stated purity, you get a full refund and a free replacement.