Supplier Page from Thermo Fisher Scientific for (4S)-(-)-4-Isopropyl-2-oxazolidinone, 98%
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Ethyl 3-chloropropionate, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific