Supplier Page from Thermo Fisher Scientific for Thymolphthalein
2-Ethyl-1,3-hexanediol, 99%, mixture of isomers from Thermo Fisher Scientific
5-Aminolevulinic acid hydrochloride, 98+% from Thermo Fisher Scientific
Hexyl alcohol, 98%, pure from Thermo Fisher Scientific
L-Leucine methyl ester hydrochloride, 98% from Thermo Fisher Scientific