Supplier Page from Thermo Fisher Scientific for sec-Butyllithium, 1.3M in cyclohexane/hexane, packaged under Nitrogen in resealable AcroSeal[t bottles
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific