During the first year of USB funding (FY 2022), asphalt rejuvenators (used for recycling asphalt) were prepared from tetralin coal derived molecules (CDM) and high oleic soybean oil (HOSO) fatty acids. At the end of the first year funding, it was determined the preparation of CDM with tetralin was not economical for scale up. New routes were explored, with the University of Wyoming School of Energy Resources, to produce an economic alternative for CDM. A method to produce fatty alcohol CDM was developed and shown to be economical. During the second year (FY 2023) of USB funding, the fatty alcohol CDM was reacted with oleic acid in an attempt to make new rejuvenators. These new CDM had less reactive sites to bond with oleic acid than the old CDM. As a result, these did not make suitable rejuvenators without adding additional oil or fatty acid components. More importantly, it was shown that the CDM oxidized more severely than the base asphalt, although the oxidation behavior was better than a commercial triglyceride rejuvenator. Both factors forced a shift in direction for the project towards developing new chemical methods to improve the oxidation performance of CDM. The most promising development was using fatty aldehydes to produce CDM. These new CDM had a much lower oxidation severity, which was similar to standard paving grade asphalt. Fatty aldehydes are produced from the dehydrogenation of fatty alcohols, which in turn are derived from vegetable oils. These aldehydes can be derived from soybean oils.