Supplier Page from Aladdin Scientific Corporation for 2,4-Dihydroxybenzoic acid
6-Amino-5-iodonicotinic acid from Aladdin Scientific Corporation
6-Hydrazinoimidazo[1,2-b]pyridazine from Aladdin Scientific Corporation
Potassium chromate from Aladdin Scientific Corporation
Propargyl bromide from Aladdin Scientific Corporation