Supplier Page from Thermo Fisher Scientific for 4-tert-Butylcalix[4]arene, 99%
D(-)-Ribose, 99+% from Thermo Fisher Scientific
DL-Menthol, 99% from Thermo Fisher Scientific
L(+)-Glutamic acid monosodium salt monohydrate, 99% from Thermo Fisher Scientific
Shikimic acid, 98% from Thermo Fisher Scientific