# Analysis Box Tab

MarvinSketch can calculate some basic properties for your structures, which can be pasted into your drawing.

The calculations update upon modification except if they applied to a selection. For more information, see the Analysis Box.

You can set the properties you want to be displayed and their order as well.

The following properties can be calculated:

Name

Traditional name

Molecular weight

Formula

Formula with charge

Exact mass

Dot-disconnected formula

Dot-disconnected formula with charge

Isotope composition

m/z distribution

The decimals setting applies to the exact mass value only.

By default, the value of molecular weight is set to three decimal places.