The Molecular Structure of 2-Hydroxybutyrolactone: Hydrophobicity and Methyl Groups

The statement 'In terms of molecular structure: 2-hydroxybutyrolactone has two more hydrophobic methyl groups than D-PL (Fig. S4).' is grammatically correct.

This statement highlights a key structural difference between 2-hydroxybutyrolactone and D-PL. 2-hydroxybutyrolactone possesses two additional methyl groups compared to D-PL. These methyl groups are characterized as hydrophobic, meaning they repel water molecules.

This difference in hydrophobicity can have significant implications for the properties and behavior of these molecules. For example, it may influence their solubility, reactivity, and interactions with other molecules.

Figure S4 likely provides a visual representation of these molecular structures, allowing for a clearer understanding of the position and impact of the additional methyl groups in 2-hydroxybutyrolactone.