Supplier Page from Thermo Fisher Scientific for µd-Valerolactone, 98%, may contain polymer
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, 99+% from Thermo Fisher Scientific
Glycinamide hydrochloride, 98% from Thermo Fisher Scientific