Supplier Page from Aladdin Scientific Corporation for (R)-(+)-α-Allylalanine
Barium hydroxide octahydrate from Aladdin Scientific Corporation
Biotin-PEG5-azide from Aladdin Scientific Corporation
Methyltetrazine-PEG12-t-butyl ester from Aladdin Scientific Corporation
Z-Ala-Ala-OH from Aladdin Scientific Corporation