Resolution = M / ΔM

This tool allows to generate a list of molecular formulas based on a mass range.

Allowed Molecular Formula range in the format Xn-mYo-p (ex. C1-10H1-15B2):

The number of insaturations can be taken into account if only the following elements are allowed : H, C, O, N, F, Cl, Br, I. It is defined as ((2*n_{C} - n_{H} - n_{Cl}- n_{F} - n_{I} - n_{Br} + n_{N}) / 2) +1. Limit the results by unsaturations: to

Allow only integer unsaturation values: