Supplier Page from Thermo Fisher Scientific for (R)-alpha-Methyltryptophan hemihydrate, 98%, 98% ee
2-Ethylaniline, 98% from Thermo Fisher Scientific
Ethyl 2-oxocyclohexanecarboxylate, 95% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
N-Ethylaniline, 98% from Thermo Fisher Scientific