Dataframe with stable isotopes.
A data frame with 302 observations on the following 4 variables.
Stable isotopes of an element
Relative atomic mass
Isotopic composition of an element
Maximum number of atoms of an element for one C-atom in a molecule, based on 99.99 % of case molecules.
ratioC-value stems from a database survey conducted by Kind&Fiehn (2007); to disable, set value to 0.
The list serves as input into several package nontarget-functions. The first column of the data frame also
contains names of specific isotopes used for labeled compounds.
Kind, T. and Fiehn, O., 2007. Seven golden rules for heuristic filtering of molecular formulas obtained by accurate mass spectrometry. BMC Bioinformatics, 8:105.
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