Supplier Page from Thermo Fisher Scientific for (R)-2-Isobutylsuccinic acid-1-methyl ester, 95%, (98% ee)
1-Ethylpiperidine, 99% from Thermo Fisher Scientific
2-Fluoroaniline, 99+% from Thermo Fisher Scientific
4-Fluoroanisole, 99% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific