Supplier Page from Thermo Fisher Scientific for Aluminum foil, 0.025mm (0.001in) thick, 30x30cm (12x12in), 99.45% (metals basis)
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific