Keywords: 4-Aminobenzoic-acid-zwitterion-3D-balls.png Ball-and-stick model of the 4-aminobenzoic acid molecule also known as para-aminobenzoic acid or PABA an important biological intermediate and one of the three isomers of aminobenzoic acid This image shows the zwitterionic form Colour code 505050 Carbon C black<br> F0F0F0 Hydrogen H white<br> F51E1E Oxygen O red<br> 3C50FA Nitrogen N blue<br> 2011-02-18 own DS Visualizer Jynto talk Neutral form ball-and-stick version Neutral form Space-filling version Zwitterionic form Space-filling version cc-zero 4-aminobenzoic acid Zwitterions Images by Jynto Ball-and-stick models |