How do I compute the +4 charge state m/z for a peptide of 4113.6 Da?

Asked 18 May 2026Modified 2 months agoViewed 1.9k times

The particulars: +4 · 4113.6 Da.

I would like the arithmetic checked rather than the conclusion asserted.

I have deliberately not used an online calculator because I want to be able to check the result.

Can someone show the working rather than just the answer?

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askedjonas_ekstrom12k3818 May 2026

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This question has not been answered. It has been viewed 1.9k times, which suggests the question is of interest and the answer is not obvious. If you can answer it with a source or a worked calculation, it will be read. See how to ask and answer.

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