Cheminformatics

How do you calculate structure to properties?

A SMILES to its formula, molar mass, exact mass, and isotope pattern. Invalid valence is flagged, never guessed. The relationship used is SMILES → formula → mass.

Worked example

Every number below is computed by the calculator, not typed in

What you are given

  • SMILES: c1ccccc1

Formula: SMILES → formula → mass

The working

  1. Formula: C6H6
  2. Average MW: Σ count · atomic weight = 78.114 g/mol
  3. Monoisotopic: Σ count · isotope mass = 78.047 Da

C6H6, 78.114 g/mol.

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