Supplier Page from Thermo Fisher Scientific for (Formylmethylene)triphenylphosphorane, 97%, may cont. up to ca 3% water
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
D-Sorbitol, 97% from Thermo Fisher Scientific
Galvinoxyl free radical, 98% from Thermo Fisher Scientific
L-Serine, 99% from Thermo Fisher Scientific