Reference Standards Under Development

The following list features never-before-released Reference Standards currently under development at USP and their anticipated release dates. This list is distributed quarterly, and is downloadable as a Microsoft Excel file.

Note: Anticipated release dates are estimates made at the time the list is compiled. Future Reference Standards may be added to or withdrawn from the list at any time, and Reference Standards may be released sooner or later than the estimated dates stated here. Reference Standards listed here may be used by more than one compendium now or in the future.

Additional Reference Standards Tools

If you do not see a Reference Standard on this list or in the USP online store, you can also suggest a new Reference Standard to our development team.

Questions About Reference Standards Under Development?

Please email questions to