What you are given
- Formula (optional): C9H8O4
Formula: m/z = (M·n + adduct) / z
Spectrophotometry
How do you calculate mS adduct m/z calculator?
Formula or mass to adduct m/z, and reverse-match an observed peak by ppm. The relationship used is m/z = (M·n + adduct) / z.
Worked example
Every number below is computed by the calculator, not typed in
The working
- Neutral mass:
M (monoisotopic)=180.0423 Da - m/z:
(M·n + adduct) / z
Adduct m/z for M = 180.0423 Da.
Try it yourself
Two problems, with the working revealed
Problem 1 MS adduct m/z calculator
Work out the result for mS adduct m/z calculator.
- Formula (optional): C6H12O6
- Observed m/z (optional): 203.05
Show the answer and the working
Closest adduct: [M+Na]+ at m/z 203.0526 (-12.8 ppm).
- Neutral mass:
M (monoisotopic)=180.0634 Da - m/z:
(M·n + adduct) / z
Open this in the calculator to change the numbers.
Problem 2 MS adduct m/z calculator
Work out the result for mS adduct m/z calculator.
- Formula (optional): C9H8O4
Show the answer and the working
Adduct m/z for M = 180.0423 Da.
- Neutral mass:
M (monoisotopic)=180.0423 Da - m/z:
(M·n + adduct) / z
Open this in the calculator to change the numbers.
Do it with your own numbers.
The MS adduct m/z calculator calculator is free, shows every step, flags the hazards, and works offline once loaded. No account, no signup.
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