BioSciences - Polysciences, Inc.

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Stable Isotope Compounds
Stable Isotope Labeled Compounds
Polysciences provides over 200 stable isotope labeled compounds for use as mass spectroscopy internal
standards and for obtaining clearer results when analyzing NMR samples including:
• Final Drug Substances and Intermediates
• Vitamin Standards
• Steroid Standards
• Caffeine and Xanthine Standards
• Environmental Standards
• Biological Standards
• Standards and Precursors for PET
• Custom Synthesis
This catalog includes many hard to find stable isotope labeled compounds useful for both the research
and analysis communities . Many of these compounds can also be provided in larger quantities than those
listed in the catalog, so please inquire for pricing and availability . We can also provide custom synthesized,
labeled versions of nearly any compound that you may need as well as custom versions of our catalog
compounds with different substitution patterns or additional labeled atoms .
For convenience many of our more popular compounds are also available as exact concentration solutions .
These [Exact] 2 Solutions with both exact known mass and concentration provide the most convenient
method to quickly add a known amount of internal standard to your samples prior to analysis .
[Exact] 2 Solutions Reference Standard Solutions
• Exact mass Vitamin & Steroid solutions available
• Exact concentration determined for each lot
• Ready to use 1 mL solutions in sealed ampules
➢ • No need to weigh samples
➢ • No need to dilute solutions
• Increased vitamin stability
• Lower cost
• Less waste
For more information please call (800) 523-2575 or visit: polysciences.com
25226
Estrone-[2,3,4- 13 C 3 ]
25124
Vitamin-D3-[ 2 H 3 ]