Supplier Page from Thermo Fisher Scientific for Perchloric acid, pure, 0.1M solution in acetic acid
2-Ethylaniline, 98% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl 2-bromoisobutyrate, 98% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific