The distinctive scent of the rose derived from acyclic monoterpene alcohols, geraniol (up to 75%), citronellol (20%) and nerol (20%), and long-chain hydrocarbons like nonadecane or heneicosane (up to 10%). An important trace component of rose oil is beta-damascenone. Even though this chemical makes up only 0.01% of the weight of the rose, its presence or absence determines the appeal of the rose.
