Supplier Page from Thermo Fisher Scientific for Arsenic polycrystalline lump, 2-8mm (0.08-0.3in), Puratronic:r, 99.99999+% (metals basis)
4-Fluoroaniline, 98% from Thermo Fisher Scientific
4-Fluoroanisole, 99% from Thermo Fisher Scientific
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific