Supplier Page from Thermo Fisher Scientific for (R)-(+)-3-Butyn-2-ol, 98%, 98% ee
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific
Ethyl 4-bromocrotonate, 75%, tech from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl picolinate, 99% from Thermo Fisher Scientific