Supplier Page from Thermo Fisher Scientific for 4-Nitrophenol, 99%
DL-Methionine, 99+% from Thermo Fisher Scientific
Imidazole, 99% from Thermo Fisher Scientific
L-Serine, 99% from Thermo Fisher Scientific
Mineral oil, for spectroscopy, suitable for nujol mull preparations for IR-spect from Thermo Fisher Scientific