Supplier Page from Thermo Fisher Scientific for 1-Chloronaphthalene, tech. 85%, remainder 2-chloronaphthalene
2-Furoic acid, 98% from Thermo Fisher Scientific
Furfurylamine, 99+% from Thermo Fisher Scientific
Glyoxylic acid monohydrate, 98%, pure from Thermo Fisher Scientific
N-Formylpiperidine, 99% from Thermo Fisher Scientific