Supplier Page from Aladdin Scientific Corporation for Potassium phosphate buffer
4-Nitrophenyl hepta-O-acetyl-β-lactoside from Aladdin Scientific Corporation
650 nm Stop Reagent for TMB Microwell Substrates from Aladdin Scientific Corporation
D-phenylglycine methyl ester ·HCl from Aladdin Scientific Corporation
D-styrylalanine from Aladdin Scientific Corporation