Supplier Page from Thermo Fisher Scientific for 2-O-µa-D-Glucopyranosyl-L-ascorbic acid, 99.5%
2-Ethylaniline, 98% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific