Supplier Page from Thermo Fisher Scientific for Hexavalent Chromium, standard solution, Specpure:r, Cr:+6 1000µg/mL
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific
Ethyl picolinate, 99% from Thermo Fisher Scientific