Supplier Page from Aladdin Scientific Corporation for D-(+)-Sorbose
5β-Cholestan-3α-ol from Aladdin Scientific Corporation
Barium hydroxide octahydrate from Aladdin Scientific Corporation
N-Acetyl-DL-histidine Monohydrate from Aladdin Scientific Corporation
Trifluoroacetic acid - Triethylamine 2M:2M solution from Aladdin Scientific Corporation