N-tetracosanoyl-(4R)-hydroxysphinganine + NADPH + O2 + H(+) = N-(2-hydroxytetracosanoyl)-(4R)-hydroxysphinganine + NADP(+) + H2O
n-tetracosanoyl-(4r)-hydroxysphinganine + nadph + o2 + h(+) = n-(2-hydroxytetracosanoyl)-(4r)-hydroxysphinganine + nadp(+) + h2o
N-tetracosanoyl-(4R)-hydroxysphinganine + NADPH + O2 + H(+) = N-(2-hydroxytetracosanoyl)-(4R)-hydroxysphinganine + NADP(+) + H2O
n-tetracosanoyl-(4r)-hydroxysphinganine + nadph + o2 + h(+) = n-(2-hydroxytetracosanoyl)-(4r)-hydroxysphinganine + nadp(+) + h2o