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Mass Data Atomic Isotope Masses Atomic Weights Amino Acid Residue Mass Amino Acid Structures Carbohydrate Masses Common Calibrant Masses Common Neutral Losses Nucleoside Mass WWW ChemTools Ion Formula by Mol. Weight Isotope Pattern Calculator Mass Loss Calculator Periodic e-Table WWW BioTools EMBL Peptide Search - protein ID from peptide mass and sequence data FindMod - post-translational modifications by peptide mass GlycanMass - oligosaccharide mass from structure GlycoMod - oligosaccharide structures from mass Javascript Protein Digest - peptide digest masses Javascipt Fragment Ion Generator for peptides Mascot Search - peptide mass and sequence tools Mowse - protein identification from peptide MS data Protein Prospector - mass spectra interpretation tools PROWL - identification of proteins from MS data	isotope mass i-mass guides : home classic articles definitions & terms history mass data movies Nobel prizes protocols resources techniques troubleshooting tutorials     element symbol nominal mass exact mass abundance % Hydrogen H D or 2H 1 2 1.00783 2.01410 99.99 0.01 Carbon 12C 13C 12 13 12.0000 13.0034 98.91 1.09 Nitrogen 14N 15N 14 15 14.0031 15.0001 99.6 0.4 Oxygen 16O 17O 18O 16 17 18 15.9949 16.9991 17.9992 99.76 0.04 0.20 Fluorine F 19 18.9984 100 Silicon 28Si 29Si 30Si 28 29 30 27.9769 28.9765 29.9738 92.2 4.7 3.1 Phosphorus P 31 30.9738 100 Sulphur 32S 33S 34S 32 33 34 31.9721 32.9715 33.9679 95.02 0.76 4.22 Chlorine 35Cl 37Cl 35 37 34.9689 36.9659 75.77 24.23 Bromine 79Br 81Br 79 81 78.9183 80.9163 50.5 49.5 Iodine I 127 126.9045 100	MS Book Suppliers Academic Press amazon.com American Chemical Society Barnes & Noble Humana Press Royal Society of Chemistry Wiley Interscience MS Journals European Mass Spectrom. Intl. J. of Mass Spectrom. J. American Society of MS J. Mass Spectrometry J. MS Society of Japan Mass Spectrometry Reviews Rapid Communications in MS Literature Search Beilstein Abstracts ChemWeb Current Contents - ISI PubMed - NCBI PubScience - DOE

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