Panthenol comes in two enantiomers, D and L. Only D-panthenol (dexpanthenol) is biologically active, however both forms have moisturizing properties.
Pantenol ima dva enantiomera, D i L. Samo je D-pantenol (dekspantenol) biološki aktivan, međutim obe forme imaju sposobnost ovlažavanja.