Supplier Page from Thermo Fisher Scientific for 3-Bromo-4-hydroxypyridine, 97%
4'-Fluoroacetophenone, 99% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl 4-bromocrotonate, 75%, tech from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific