Supplier Page from Thermo Fisher Scientific for 4-tert-Butyldimethylsiloxy-1-butanol, 97%
1-Heptanol, 98% from Thermo Fisher Scientific
D-Sorbitol, 97% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Fumaric acid, 99+% from Thermo Fisher Scientific