3,3-Bis(chloromethyl)oxetane 3,3-Dichloromethyloxycyclobutane 5-17-01-00085 (Beilstein Handbook Reference) 78-71-7 BRN 0103354 Bcmo EINECS 201-136-5 HSDB 6322 OXETANE, 3,3-BIS(CHLOROMETHYL)- Penton