Supplier Page from Thermo Fisher Scientific for Thymolphthalein
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
Adipic acid, 99% from Thermo Fisher Scientific
L(+)-Histidine methyl ester dihydrochloride, 97% from Thermo Fisher Scientific
L-Serine, 99% from Thermo Fisher Scientific