Supplier Page from Thermo Fisher Scientific for Methyl Red, 0.1% w/v solution in ethanol
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
L(+)-Histidine methyl ester dihydrochloride, 97% from Thermo Fisher Scientific
Methyl 4-(chloroformyl)butyrate, 98% from Thermo Fisher Scientific
Sebacic acid, 98% from Thermo Fisher Scientific