? o-Aminoacetophenone (CAS NO.551-93-9), its Synonyms are 1-Acetyl-2-aminobenzene ; 2'-Amonioacetophenone ; 2-Acetylaniline ; 2-Aminoacetophenone ; Ethanone, 1-(2-aminophenyl)- ; Acetophenone, 2'-amino- .