Supplier Page from Aladdin Scientific Corporation for 1,3-Diethylurea
1,3-Propanediol from Aladdin Scientific Corporation
6-Amino-2-naphthalenesulfonic Acid from Aladdin Scientific Corporation
Chlorodibromomethane solution from Aladdin Scientific Corporation
Z-D-Ser(tBu)-OH from Aladdin Scientific Corporation