1-acyl-2-octadecanoyl-sn-glycero-3-phosphate
1-acyl-2-octadecanoyl-sn-glycero-3-phosphate
A 1,2-diacyl-<em>sn</em>-glycerol 3-phosphate in which the acyl group at position 1 is unspecified while that at position 2 is specified as stearoyl (octadecanoyl).