Abstract: Hippophae rhamnoides L. subsp, sinensis Rousi (Zhongguoshaji) contains aromatic volatile oil (0.036%), which contains 95 individual compounds as detected by GC and GC-MS. The mixture comprised alkanes, alkenes, aromatic hydrocarbons, aldehydes, acetals, kctones, esters, terpenoids and considerable free fatty acids (up to 30%). 1, 1-diethoxy-n-tetradecane (myristic aldehyde acetal), one of the components, is a new natural organic compound.