CAS 1643852-37-2 appears in our catalog under these names: 19-(tert-Butoxy)-19-oxononadecanoic acid 97%, 19-(tert-Butoxy)-19-oxononadecanoic acid 98%, 19-(tert-Butoxy)-19-oxononadecanoic acid, 97%, 97%, Boc-C17-COOH, 99.63%, 19-(tert-Butoxy)-19-oxononadecanoic acid, 97%. Offered by: Ambeed, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 250mg, 1g, 5g, 100mg, 25g, 500 mg, 100 mg, 5 g.