Ball-and-stick model of a sotalol molecule, C₁₂H₂₀N₂O₃S. This model is based on the crystal structure of the hydrochloride, reported in Acta Cryst. B (1976) 32, 2757-2761 (CSD entry SOTALC). The OH hydrogen is not located in the crystal structure determination but is assumed to be present, so its position has been guessed for this diagram. Similarly, one of the two R₂NH₂⁺ protons has been deleted to make the group neutral, but the choice of proton is somewhat arbitrary. No crystal structure of the free base molecule could be found in the literature at the time of writing.

Colour code:

  Carbon, C: grey

  Hydrogen, H: white

  Nitrogen, N: blue

  Oxygen, O: red

  Sulfur, S: yellow