Supplier Page from Thermo Fisher Scientific for (R)-alpha-Methyltryptophan hemihydrate, 98%, 98% ee
Ethyl 3-chloropropionate, 98% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethyl phenylcyanoacetate, 97% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific