(S)-2-((tert-butoxycarbonyl)amino)-2-((1r,4S)-4-methylcyclohexyl)acetic acid

CAS 1187224-06-1

A reagent does not need its own drug activity to contribute to discovery. CAS 1187224-06-1 is a protected amino acid with a specified S configuration and a trans-4-methylcyclohexyl group. Its free acid can connect to an amine while Boc temporarily masks the original nitrogen. Patent experiments on IL-17A modulators explicitly use this building block to prepare different amides. Keeping one fragment constant while changing its partners supports meaningful comparisons between completed molecules. The activity of those products should not be assigned to the starting acid. The chemical story is selective construction: a defined three-dimensional fragment and two separately managed functions help organize a research series. Stereochemical labels identify the material, protecting groups set the sequence, and experiments establish what each final molecule does.