Supplier Page from Thermo Fisher Scientific for Buffer solution, pH 2.00 (µ+0.01 @ 25µoC), No Color, Specpure:r, NIST Traceable
4-Fluoroaniline, 98% from Thermo Fisher Scientific
Ethyl oxamate, 99% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific
N-Ethylaniline, 98% from Thermo Fisher Scientific