Supplier Page from Thermo Fisher Scientific for Dicyclopentadiene, 95%, stabilized with 100-200 ppm 4-tert-Butylcatechol
DL-Menthol, 99% from Thermo Fisher Scientific
meso-Erythritol, 99% from Thermo Fisher Scientific
Methyl 5-bromovalerate, 97% from Thermo Fisher Scientific
Riboflavin, 98% from Thermo Fisher Scientific