CAS 170228-81-6 appears in our catalog under these names: 3-Azaspiro[5.5]undecane-3,9-dicarboxylic acid 3-(tert-butyl) ester, 96%, 3-((tert-butoxy)carbonyl)-3-azaspiro(5.5)undecane-9-carboxylic acid, 3-[(tert-butoxy)carbonyl]-3-azaspiro[5.5]undecane-9-carboxylic acid 98%, 3-(tert-Butoxycarbonyl)-3-azaspiro[5.5]undecane-9-carboxylic acid, 98%, 98%, 3-(tert-Butoxycarbonyl)-3-azaspiro[5.5]undecane-9-carboxylic acid, 97.0%. Offered by: Combi-blocks, Biosynth, Ambeed, Chemat, MedChemExpress. Available pack sizes: 250mg, 5g, 1g, 10g, 100mg, 50mg, 5 g, 1 g.