Supplier Page from Thermo Fisher Scientific for Hydrogen bromide, pure, 33 wt% solution in glacial acetic acid
Ethyl 3-pyridylacetate, 99% from Thermo Fisher Scientific
Ethyl benzoate, 99+% from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific
Ethyl picolinate, 99% from Thermo Fisher Scientific