Supplier Page from MedChemExpress for 8-(p-Sulfophenyl)theophylline
0.25% Trypsin-EDTA (1×), no phenol red from MedChemExpress
HEPES-d18 from MedChemExpress
PBS Buffer (1×) from MedChemExpress
Protease Inhibitor Cocktail, Bacteria (EDTA-Free, 100× in DMSO) from MedChemExpress