BMRB

Biological Magnetic Resonance Data Bank


A Repository for Data from NMR Spectroscopy on Proteins, Peptides, Nucleic Acids, and other Biomolecules
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How to calculate the mass of a
particular isotopic composition

Molecular Mass Calculator

Enter the molecular formula of the molecule.
Examples: C6H12O6, PO4H2(CH2)12CH3

Calculate molecular mass by: