Search & Buy Reference Standards

USP currently offers more than 3,500 Reference Standards—highly characterized specimens of drug substances, excipients, food ingredients, impurities, degradation products, dietary supplements, compendial reagents and performance calibrators. USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories.

USP is increasing Reference Standard prices effective October 1, 2021 Click here to learn more.

Download the entire catalog effective October 1, 2021

Download entire catalog as: EXCEL | PDF

Download the full foods list as: EXCEL | PDF

Download the full dietary supplements list as: EXCEL |  PDF

Download the full excipients list as: EXCEL |  PDF 

Download the full pharmaceutical analytical impurities list as: EXCEL | PDF

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Value beyond the vial

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The development process

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Download the FREE USP Reference Standards and Resources App  and easily access, track and receive information and alerts on USP Reference Standards of interest to you from your device.

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