3-[[(1,1-Dimethylethyl)diphenylsilyl]oxy]-1,2-propanediol-d5 is an intermediate for the synthesis of 1,2-Dilinoleoylglycerol-d5 (D460607), a labelled compound of 1,2-Dilinoleoylglycerol (D460605), which is a diacylglycerol from palm oil deodorizer distillate. It can be used as an Immunostimulant.