Contains resin 60%-70%, gum 27%-35%, volatile oil 3%-8%. The main components of the resin are free α-Boswellic acid, β-Boswellic acid, bound frankincense acid and frankincense resin hydrocarbon (Olibanoresene). The gum is calcium salt and magnesium salt of arabinic acid (Arabic acid), Bassorin and bitterness. The volatile oil contains pinene (Pinene), camphene (Camphene), sabinene frankincense (Sabinene), elemene (Elemene), racemic-limonene (Dipentene) and α-Phellandrene, β-Phellandrene, 1-nonene (1-Nonene), hexanal (Hexanal), heptanal (Heptanal), octanal (Octanal), nonanal (Nonanal), 2. 4-nonadienal (2, 4-Nonadional), m-isopropyltoluene (1-Methyl-3-isopropyl benze- ne), cineole (Cineole), isooctanol (Isooctanol), 1-octanol (1-Octanol), 1-nonyl alcohol (1-Nonanol), n-octyl acetate (Octyl acetate), bornyl acetate (Bornyl acetate), etc.