Isotopic Abundance

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The Isotopic Abundance property gives you the ability to distinguish between different isotopic compounds-for example between mono- and hexa-deuterobenzene-by specifying a nuclide at any location.

The isotopic abundance options are described in the following table:

Option	Search results
Unspecified	Default
Any	For ChemFinder, the same as default. Included for compatibility with other systems where the default may be different.
Natural	Indicates an isotopically unmodified nuclide.
Enriched	Indicates a mixture of isotopically substituted and isotopically unmodified nuclides.
Deficient	Indicates a depleted label, that is, the nuclide is present in less than the natural ratio.
Nonnatural	Indicates an isotopically substituted nuclide, that is, essentially all the molecules of the compound have only the indicated nuclide.