title: C19H15
text: # C19H15
  
  The molecular formula $C_{19}H_{15}$ may refer to:
  
  * Triphenylcarbenium (triphenylmethyl cation), an ion consisting of a carbon atom with a positive charge connected to three phenyl groups
  * Triphenylmethyl radical, a persistent radical and the first radical ever described in organic chemistry
  