化学成分
合欢干皮中含木脂体糖甙:左旋-丁香树脂酚-4-O-β-D-呋喃芹菜糖基-(1→2)-β-D-吡喃葡萄糖甙[syringaresinol-4-O-β-D-apiofuranosyl-(1→2)-β-D-glucopyranoside],左旋-丁香树脂酚-4-O-β-D-呋喃芹菜糖基-(1→2)-β-D-吡喃葡萄糖基-4ˊ-O-β-D-吡喃葡萄糖甙[syringaresinol-4-O-β-D-apiofuranosyl-(1→2)-β-D-glucopyranosyl-4ˊ-O-β-D-glucopyranoside],左旋-丁香树脂酚-4,4ˊ-双-O-β-D-呋喃芹菜糖基-(1→2)-β-D-吡喃葡萄糖甙[syringaresinol-4,4ˊ-bis-O-β-D-apiofuranosyl-(1→2)-β-D-glucopyranoside],左旋-丁香树脂酚-4-O-β-D-吡喃葡萄糖甙(syringaresinol-4-O-β-D-glucopyranoside),左旋-丁香树脂酚-4,4ˊ-双-O-β-D-吡喃葡萄糖甙(syringaresinol-4,4ˊ-bis-O-β-D-glucopyranoside),还含有丁香酸甲酯-4-O-β-D-呋喃芹菜糖基-(1→2)-β-D-吡喃葡萄糖甙[syringicacidmethylester-4-O-β-D-apiofuranosyl-(1→2)-β-D-glucopyranoside],秃毛冬青甲素-4-O-β-D-吡喃葡萄糖甙(glaberide-I-4-O-β-D-glucopyranoside),秃毛冬青甲素-4-O-β-D-呋喃芹菜糖基-(1→2)-β-D-吡喃葡萄糖甙[glaberideI-4-O-β-D-apiofuranosyl-(1→2)-β-D-glucopyranoside],右旋-5,5ˊ-二甲氧基落叶松脂醇-4-O-β-D-呋喃芹菜糖基-(1→2)-β-D-吡喃葡萄糖甙[5,5ˊ-dimethoxylariciresinol-4-O-β-D-apiofuranosyl-(1→2)-β-D-glucopyranoside]和5,5ˊ-二甲氧基-7-氧代落叶松脂醇-4ˊ-O-β-D-呋喃芹菜糖基-(1→2)-β-D-吡喃葡萄糖甙[5,5ˊ-dimethoxy-7-oxolariciresinol-4ˊ-O-β-D-apiofuranosyl-(1→2)-β-D-glucopyranoside]。此外,,干皮中还含21-[4-(亚乙基)-2-四氢呋喃异丁烯酰]剑叶莎酸{21-[4-(ethylidene)-2-tetrahydrofuranmethacryloyl]machaerinicacid},剑叶莎酸甲酯(machaerinicacidmethylester),金合欢酸内酯(acacicacidlactone),剑叶莎酸内酯(machaerinicacidlactone),金合欢皂甙元(acacigenin)B,7,3ˊ,4ˊ-三羟基黄酮(7,3ˊ,4ˊ-trihydroxyflavone),a-菠菜甾醇葡萄糖甙(a-spinasterylglucoside)及合欢三萜内酯甲(julibrotriterpenoidallactoneA)。山合欢树皮含鞣质。