Supplier Page from Thermo Fisher Scientific for 5-Carboxyfluorescein, single isomer, 97%
1-Ethylpiperidine, 99% from Thermo Fisher Scientific
2-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific