Supplier Page from Aladdin Scientific Corporation for δ-HCH solution
1-Acetoxy-3-chloroacetone from Aladdin Scientific Corporation
3,6-Diphenyl-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione from Aladdin Scientific Corporation
6-Amino-5-iodonicotinic acid from Aladdin Scientific Corporation
Dipyrido[3,2-a:2',3'-c]phenazine from Aladdin Scientific Corporation