Purity

The purity quoted in the catalog entry for each product is the minimum content of the active ingredient that any given batch will contain. This information is intended as a general guideline only and for data specific to each individual batch please consult the accompanying Product Data Sheet and Certificate of Analysis.

Chemical purity is assessed using an array of techniques including HPLC, chiral HPLC, NMR, microanalysis, high voltage electrophoresis, melting point, optical rotation, TLC, and mass spectrometry as appropriate. All data is kept on file and available for inspection on request – please contact Technical Support for details. In all cases we believe that the purity of any material supplied by Tocris will match or exceed the purity of the product originally reported in the scientific literature.

Stability and Storage

Due to the novelty of many of our products, information concerning product stability, particularly in solution, has rarely been reported and in most cases we can only offer a general guide. When information is known we do our best to publish this in the catalog or on the data sheets that accompany our products. Our standard recommendations are:

Shipping Conditions

Many of our products are refrigerated or frozen for long-term storage. Short periods at higher temperatures (periods < 1 week), as might occur during shipping, will not affect product life or efficacy.