Manufacturer & Exporter of 18-Crown-6. Our product range also comprises of Dibenzo-18-crown-6 and 15-Crown-5. 18-Crown-6REQUEST CALLBACK18-Crown-6 Click to ZoomAsk for Price CAS NO: 17455-13-9 SYNONYMS: 1, 4, 7, 10, 13, 16-Hexaoxacyclooctadecane; 18-Crown-6-ether. Mol. Formula: C12H24O6 Mol. Wt.: 264.31