Supplier Page from Thermo Fisher Scientific for 4-tert-Butyldimethylsiloxy-1-butanol, 97%
DL-Methionine, 99+% from Thermo Fisher Scientific
Isonipecotic acid, 99% from Thermo Fisher Scientific
L-Leucine methyl ester hydrochloride, 98% from Thermo Fisher Scientific
Mineral oil, for spectroscopy, suitable for nujol mull preparations for IR-spect from Thermo Fisher Scientific