Supplier Page from Thermo Fisher Scientific for Buffer solution, pH 4.01 (µ+0.01 @ 25µoC), No Color, Specpure:r, NIST Traceable
4-Fluoroanisole, 99% from Thermo Fisher Scientific
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
Ergosterol, 98% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific