N-Palmitoyl taurine, an amino-acyl endocannabinoid prominent in rat brain lipidomics profiling, accompanies multiple arachidonoyl amino acids isolated from bovine brain, including N-arachidonoylethanolamine (NADA) and N-arachidonoyl serine (ARA-S). Mass spectral lipidomic analysis of rat brain additionally revealed a series of fatty acyl amides with taurine. The function of N-Palmitoyl taurine is under investigation.