What is the molecular weight or identity of my compound?

Determining a compound's molecular weight and using fragmentation or reference data to establish its identity.

References

• Fenn, J.B., Mann, M., Meng, C.K., Wong, S.F., Whitehouse, C.M. "Electrospray Ionization for Mass Spectrometry of Large Biomolecules." Science 246, no. 4926 (1989): 64–71.