Tetrahydrofuran-(THF)-2,5-dicarbaldehyde and a process of preparing the same are described. The process involves reacting THF-diols in an inert organic solvent with an oxidizing agent at a temperature up to about 50C. The process can use either HMF or THF-diols as starting materials, and enables a single-step conversion of THF-diols into a precursor material that can be transformed into a multitude of furanic derivative compounds. THF dicarbaldehyde can be modified according to certain reaction processes to generate either new or existing derivative compounds.