All these properties differ for the structural isomers nBuOx and nPrOzi, leading to variation in mixture-specific features. Other descriptors, e.g. Xp -7dv, do not differ between nBuOx and nPrOzi monomers. Minor differences in values of such features are however detected and influence model predictions, as variations in structures of the termini affect the molar ratios from which mixture descriptors are computed.