C12-Ceramide (N-Lauroyl-D-erythro-sphingosine), a naturally occurring ceramide, is formed by hydrolysis of C12 sphingomyelin. C12-Ceramide can enhance the Doxorubicin toxicity in MDA-MB-231 cells. C12-Ceramide also can be used to diagnose types A and B Niemann-Pick disease[1][1].