Supplier Page from Thermo Fisher Scientific for (Carbethoxyethylidene)triphenylphosphorane, ca. 94%, balance TPPO
3-Fluorobenzyl bromide, 95% from Thermo Fisher Scientific
Ethyl 3-chloropropionate, 98% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific