Supplier Page from Thermo Fisher Scientific for µa-Naphtholphthalein
2-Ethyl-1,3-hexanediol, 99%, mixture of isomers from Thermo Fisher Scientific
L(-)-Menthol, 99.5% from Thermo Fisher Scientific
Methyl chloroformate, 99% from Thermo Fisher Scientific
Sulfur trioxide pyridine complex, technical, 48-50% active SO3 from Thermo Fisher Scientific