Supplier Page from Aladdin Scientific Corporation for Sodium bisulfite solution
Dipyrido[3,2-a:2',3'-c]phenazine from Aladdin Scientific Corporation
Nickel bromide hydrate from Aladdin Scientific Corporation
Potassium chromate from Aladdin Scientific Corporation
thieno[3,2-b]pyridine-6-carboxylic acid from Aladdin Scientific Corporation