Abstract
The chemical syntheses of [3-14C]-and [5-3H]erythro-DL-dihydrosphingosine, [5-3H] threo-DL-dihydrosphingosine, [1,3H;3-14C]erythro-DL-di-hydrosphingo-sine and [7-3H]erythro-DL-sphingosine are described.