Supplier Page from Thermo Fisher Scientific for Calcium oxide, Puratronic:r, 99.998% (metals basis, excluding other alkaline earth and alkali metals 130ppm max)
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific
Ethyl L(-)-lactate, 97% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific