Supplier Page from Aladdin Scientific Corporation for α-HCH
(S)-(-)-7-[N-(1,3-Dithian-2-yl)methylamino]-7'-[bis(3,5-di-t-butylphenyl)phosphino]-2,2',3,3'-tetrahydro-1,1'-spirobindane from Aladdin Scientific Corporation
4-Hydroxy-4'-nitrobiphenyl from Aladdin Scientific Corporation
Fluorescein PEG NHS, FITC-PEG-NHS from Aladdin Scientific Corporation
SH-PEG-COOH from Aladdin Scientific Corporation