Supplier Page from Thermo Fisher Scientific for Rubidium acetate, 99.8% (metals basis)
D-Sorbitol, 97% from Thermo Fisher Scientific
Isonipecotic acid, 99% from Thermo Fisher Scientific
L(-)-Menthol, 99.5% from Thermo Fisher Scientific
Methyl 4-(chloroformyl)butyrate, 98% from Thermo Fisher Scientific