Supplier Page from Thermo Fisher Scientific for Lead standard solution, for AAS, 1 µg/mL Pb in 2-5% HNO3
4-Ethylphenol, 97% from Thermo Fisher Scientific
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethyl oxamate, 99% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific