Supplier Page from Thermo Fisher Scientific for (1S)-(+)-Camphor-10-sulfonic acid, 98+%(dry wt.), water <2%
Ethyl benzoate, 99+% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Ethylenediamine, 99% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific