Supplier Page from Thermo Fisher Scientific for Tin(IV) 2-ethylhexanoate diisopropoxide, 98% (metals basis)
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific