1(2H)-Naphthalenone, 2-bromo-3,4-dihydro- 121254-08-8 13672-07-6 2-Bromo-1-tetralone 2-Bromo-3,4-dihydronaphthalen-1(2H)-one 2-Bromo-alpha-tetralone EINECS 237-154-5 NSC 402212