Supplier Page from Aladdin Scientific Corporation for Potassium phosphate buffer
4-Nitrophenyl hepta-O-acetyl-β-lactoside from Aladdin Scientific Corporation
6-Bromo-4-methylquinolin-2-ol from Aladdin Scientific Corporation
Citric acid monohydrate from Aladdin Scientific Corporation
Sodium hydrogencarbonate from Aladdin Scientific Corporation