Perfluorinated polymers are extensively studied due to their low absorption in the near-infrared region of spectrum compared to traditional materials. This makes them ideally suited for plastic optical fiber materials (POF). Different types of perfluorinated polymers, such as poly-(perfluoro-2-methylene-4-methyl-1,3-dioxolane) (poly(PFMMD)) and poly-(vinyl-perfluoro-2,4,5-trimethyl-1,3-dioxolane) (poly(VPFMMD)), can serve as alternatives for poly-(1,1,2,4,4,5,5,6,7,7-decafluoro-3-oxa-1,6-heptadiene) (Crytop ©), which is a commonly used fluoropolymer for POF. In order to get a better understanding of the properties of these polymers, it is important to first characterize the structures and purities of their monomer precursors.