8-(2-羟基苯甲酰胺基)辛酸钠，简称SNAC，是一种二碳磷酸盐化合物吸收促进剂，用于治疗胃肠道疾病，尤其适用于二碳磷酸盐化合物吸收不良引起的肠胃道疾病。
SNAC (12.5-400 μg/mL; 24 h) has no toxicity to Caco-2 cells, and the survival percentage is above 90% when SNAC is 200 μg/mL. SNAC (50 and 200 μg/mL) improves the apparent permeability coeffcient (Papp) of RA and SA-B by 2.14-fold and 3.68-fold compared with the Papp of SAs solution.
SNAC improves the oral absorption of both R1 and SAs and enhances bioavailability in rats. SNAC (2000 mg/kg/d; oral gavage for 13 weeks) related mortality is evident only at the 2000-mg/kg/d level, 20% among males and 50% among females; no clear cause of death is evident. SNAC (100-1000 mg/kg/d; oral gavage for 13 weeks) induces no mortality in the Wistar rat study at doses up to 1000 mg/kg/d.