CAS 23978-55-4 appears in our catalog under these names: 4,13–Diaza–18–crown 6–Ether, 1,10-Diaza-18-crown-6, 96% , 4,13-Diaza-18-crown 6-ether, 4,13-Diaza-18-crown 6-Ether, >98.0%(T), Diaza-18-crown-6, 98%. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, TCI, Thermo Scientific (Acros). Available pack sizes: 1g, 250mg, 5g, 100mg, 2.5g, 500MG, 1000mg, 2000mg.