Supplier Page from Thermo Fisher Scientific for (R)-(-)-2,3-O-Isopropylideneglycerol, 96%
1-Ethynyl-1-cyclohexanol, 99+% from Thermo Fisher Scientific
DL-Glutamic acid monohydrate, 98+% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, methanesulfonic acid salt, 98% from Thermo Fisher Scientific