Supplier Page from Thermo Fisher Scientific for Benzalkonium chloride, alkyl distribution C8-C16, 50 wt% aqueous solution
2-Mesitylenesulfonyl chloride, 99% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Fumaric acid, 99+% from Thermo Fisher Scientific
Methyl 4-(chloroformyl)butyrate, 98% from Thermo Fisher Scientific