Pentadecatoic

Pen`ta`dec`a`to´ic

    (pĕn`tå`dĕk`å`tō´ĭk)
a.1.(Chem.) Of, pertaining to, or derived from, pentadecane, or designating an acid related to it.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.