This product is supplied by the European Pharmacopeia (EP). The stability data is not provided by the EP. Products that are robust in nature and extremely stable in the original, unopened container are not assigned an expiration date or retest schedule. These products will have no dating reported on either the label or the Certificate of Analysis.
Products that are not assigned an expiration or retest date are covered by a warranty period of 1 year from the date of product shipment.
Full Product Dating Information may be reviewed at the link below: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/190/408/product-dating-information-ms.pdf?.