Supplier Page from Aladdin Scientific Corporation for 5-Pyridoxolactone
Bromo-PEG4-azide from Aladdin Scientific Corporation
Hexamethonium hydroxide solution from Aladdin Scientific Corporation
meta-Phosphoric acid from Aladdin Scientific Corporation
O-tert-Butyl-L-threonine tert-Butyl Ester from Aladdin Scientific Corporation