Based on the data presented in Table , it is evident that while the LDLD-A values are comparable for PBA-DLA_S and PBA-DLA_B, there is a notable difference in the LBDO-DA values. Both copolymers have a longer BDO-DA sequence, however, in PBA-DLA_S, it is twice as long, indicating a more distinct blocky distribution within the macromolecule. This observation is further supported by the calculated R values, with the R value of PBA-DLA_S being lower than 1, indicating a blocky segmental distribution, while the R value of PBA-DLA_B is closer to unity, suggesting a relatively more random chemical structure. A potential explanation for this phenomenon is the high selectivity of CAL-B towards the monomers used in the synthesis. When the synthesis is performed in solution, CAL-B's increased mobility allows it to more readily interact with the monomer towards which it exhibits higher catalytic activity. In this case, CAL-B may exhibit enhanced activity toward BDO-DA due to its shorter aliphatic chain, which can reach the active site pocket of CAL-B more easily than DLD possessing a long aliphatic chain (C=36). As a result, during solution-phase reactions, the formation of BDO-DA blocks may take precedence, serving as the primary product.