CAS 187035-39-8 appears in our catalog under these names: Methyl (2s)-2-[(tert-butoxy)carbonylamino]-3-(4-pyridyl)propanoate, 98%, Methyl (2s)-2-((tert-butoxy)carbonylamino)-3-(4-pyridyl)propanoate, 98%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 5g, 1g, 250mg.