5-Methoxy-2-tetralone , its CAS NO. is 32940-15-1, the synonyms are 2(1H)-Naphthalenone, 3,4-dihydro-5-methoxy- ; Methoxy-2-tetralone ; 5-Methoxyl-2-Tetralone ; 2(1H)-Naphthalenone,3,4-dihydro-5-methoxy- .