Macs in Chemistry

Insanely Great Science



Chemical structure drawing is very much dominated by a couple major applications so it is nice to see an alternative being made available. MoleculeSketch is a simple and easy to use drawing App for chemical formulas and reactions. New macOS version 2.3 and iPad version 2.1 have just been released.


It has following features:

  • add atoms and bonds nicely by position locking (can be disabled)
  • choose different double bond styles
  • add stereo bonds
  • add bonds with higher hapticity
  • type functional groups by double-clicking on symbol
  • show missing hydrogen atoms depending on free valences
  • "grow" and remove hydrogen atoms
  • show non bonding electron pairs on heteroatoms
  • change background color of drawing area and add a grid
  • copy/paste/cut molecules and drawings
  • paste drawings into other applications as pdf drawing
  • import from mol files (V2000 format)
  • use trackpad gestures for zooming and rotation
  • access drawing attributes from popover panels
  • add reaction arrows and text fields
  • calculate average mass and formula of molecules
  • group and arrange objects
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