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Sphinganine (d20:0) is a natural isomer of dihydro-D-erythro-sphinganine (sphinganine (d18:0); that is a precursor of ceramide and sphingosine as well as a substrate for sphingosine kinases, which generate sphingosine-1-phosphate (d18:1) . In S. cerevisiae, the amount of sphinganine (d20:0) increases 10.8-fold in response to heat stress, indicating it is involved in heat stress adaptation. Sphinganine levels increase significantly in response to certain mycotoxins, including fumonisins as well as in some cancers. Sphinganine can block protein kinase C activation in some cases but not others.

Sphinganine is a synthetic bioactive sphingolipid that inhibits the growth of C. glabrata and C. albicans with a minimum fungicidal concentration (MFC) value of 0.5 μg/ml for both. More commonly, sphinganine is used as an internal standard in the analysis of sphingoid compounds by chromatographic or spectrometric methods.

Sphinganine 1-phosphate is an intermediate in the sphingolipid metabolic pathway and is structurally similar to sphingosine. It has a protective effect on the kidney and liver through activation of the S1P1 receptor in mice. D-erythro-Dihydrosphingosine 1-phosphate acts as an agonist for S1P4 in Homo sapiens and may activate GPR63 (G protein-coupled receptor), mainly used in the study of Fabry disease, Gaucher disease, Krabbe disease and Leukodystrophy.