Supplier Page from Aladdin Scientific Corporation for Citrate buffer
Bromo-PEG4-azide from Aladdin Scientific Corporation
DL-Mandelic acid from Aladdin Scientific Corporation
N,α-Diphenylbenzotriazolemethanamine, mixture of Bt1 and Bt2 isomers from Aladdin Scientific Corporation
Tetraethylammonium hydroxide solution from Aladdin Scientific Corporation