1-(3-O-sulfo-beta-D-galactosyl)-N-tetracosanoylsphingosine is a D-galactosyl-N-acylsphingosine having a sulfo group at the 3-position on the galactose ring and tetracosanoyl as the N-acyl group. It is a galactosylceramide sulfate and a N-acyl-beta-D-galactosylsphingosine. It is a conjugate acid of a 1-(3-O-sulfo-beta-D-galactosyl)-N-tetracosanoylsphingosine(1-).