Supplier Page from Aladdin Scientific Corporation for Methoxypolyethylene glycol azide
7-Acetoxy-4-bromomethylcoumarin [for HPLC Labeling] from Aladdin Scientific Corporation
Barium hydroxide octahydrate from Aladdin Scientific Corporation
DBCO-C3-PEG4-amine from Aladdin Scientific Corporation
Trifluoroacetic acid - Triethylamine 2M:2M solution from Aladdin Scientific Corporation