1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-Pentacosafluoro-14-iodotetradecane can be useful in the preparation of terminally perfluorinated propanethiols in the study of self-??assembled monolayers (FSAMs). It can also be useful in identifying new persistent and bioaccumulative organics among chemicals in commerce.