Supplier Page from Aladdin Scientific Corporation for 18-Crown-6
4-Nitrophenyl hepta-O-acetyl-1-thio-β-lactoside from Aladdin Scientific Corporation
7-Octynoic acid from Aladdin Scientific Corporation
Biotin-PEG5-azide from Aladdin Scientific Corporation
Dabsyl-L-tryptophan from Aladdin Scientific Corporation