Supplier Page from Thermo Fisher Scientific for Lead(II) titanium(IV) isopropoxide, 99.9% (metals basis), 5% w/v in isopropanol
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethylmercurithiosalicylic acid, sodium salt, 97.0-101.0% from Thermo Fisher Scientific
meso-Erythritol, 99% from Thermo Fisher Scientific