Supplier Page from Aladdin Scientific Corporation for Sodium nitrite
2-Chloro-5-nitronicotinic acid from Aladdin Scientific Corporation
5-Bromo-1-(phenylsulfonyl)-2-(trimethylsilyl)-1H-pyrrolo[2,3-b]pyridine from Aladdin Scientific Corporation
Iron(III) chloride hexahydrate from Aladdin Scientific Corporation
Potassium fluoride from Aladdin Scientific Corporation