(S)-propane-1,2-diol

(S)-propane-1,2-diol is the S-enantiomer of propane‑1,2‑diol—commonly known as propylene glycol. It is a clear, colorless, viscous organic solvent and diluent used in pharmaceutical preparations. As a chiral molecule with two alcohol groups (a diol), it serves as an excipient and vehicle for drug formulations but does not have direct pharmacological activity. Its primary function is to act as a solvent or carrier for active pharmaceutical ingredients in various dosage forms[3][6][8]. The compound is also widely used in food processing and cosmetics due to its humectant properties[5].

Other names

(S)-propane-1,2-diol(S)-1,2-Propanediol(S)-(+)-Propane-1,2-diolPropylene glycol S-isomer4254-15-3