Supplier Page from Thermo Fisher Scientific for Hydroxypropyl methyl cellulose, M.N. 86,000, viscosity 4,000 cP (2% solution)
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific