Supplier Page from Thermo Fisher Scientific for Bromothymol Blue sodium salt, 0.04% w/v aq. soln
L(+)-Glutamic acid monosodium salt monohydrate, 99% from Thermo Fisher Scientific
Methyl chloroformate, 99% from Thermo Fisher Scientific
Norcamphor, 99% from Thermo Fisher Scientific
trans-4-Hydroxy-L-proline, 99+% from Thermo Fisher Scientific