Supplier Page from Thermo Fisher Scientific for 6-Oxa-1-azaspiro[3.3]heptane hemioxalate, 95%
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific