The FAHFA standards, including 5-PAHSA, 9-PAHSA, 10-PAHSA, 12-PAHSA, 13-PAHSA, 5-SAHPA, 10-SAHPA, 5-MAHMA, 9-MAHMA, 10-MAHMA, 5-MAHPA, 9-MAHPA, 10-MAHPA, 5-PAHMA, 9-PAHMA, 10-PAHMA, 5-PDAHPA, 10-PDAHPA, 5-PAHPA, 9-PAHPA, 10-PAHPA, 5-SAHMA, 10-SAHMA, 7-PDAHSA, 9-PDAHSA, 10-PDAHSA, 10-POHSA, 5-POHSA, 12-POHSA, 13-POHSA, 5-OAHSA, 9-OAHSA, 12-OAHSA, 13-OAHSA, 5-SAHSA, 10-SAHSA, 12-SAHSA, 13-SAHSA, and 10-OSHSA were purchased from Cayman Chemical (Ann Arbor, MI, USA), RC ChemTecCo., Ltd. (Wuhan, Hubei, China), and XuKang Medical Science and Technology Co., Ltd. (Xiangtan, Hunan, China). 2-Chloro-1-methylpyridinium iodide (CMPI), triethylamine (TEA), and 2-dimethylaminoe-thylamine (DMED) were provided by Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China).
HPLC grade acetonitrile (ACN), acetone, chloroform, and methanol were purchased from Merck (Darmstadt, Germany). Analytical grade formic acid, and ammonium hydroxide were obtained from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). Strong anion-exchange solid-phase extraction cartridges (3 mL, 200 mg) were supplied by Weltech Co. (Wuhan, China).
HPLC grade acetonitrile (ACN), acetone, chloroform, and methanol were purchased from Merck (Darmstadt, Germany). Analytical grade formic acid, and ammonium hydroxide were obtained from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). Strong anion-exchange solid-phase extraction cartridges (3 mL, 200 mg) were supplied by Weltech Co. (Wuhan, China).