Supplier Page from Thermo Fisher Scientific for Niobium isopropoxide, 99% (metals basis), 10% w/v in isopropanol/hexane (50:50)
(±)-erythro-Aleuritic acid, 95% from Thermo Fisher Scientific
Hydroquinone, 99% from Thermo Fisher Scientific
Mineral oil, for spectroscopy, suitable for nujol mull preparations for IR-spect from Thermo Fisher Scientific
Semicarbazide hydrochloride, 99+% from Thermo Fisher Scientific