?4'-Hydroxyacetophenone , its CAS NO. is 99-93-4, the synonyms are 1-(4-Hydroxyphenyl)ethanone ; 4-Acetylphenol ; 4-Hydroksyacetofenol ; Acetophenone, 4'-hydroxy- ; Acetophenone, p-hydroxy- ; Methyl p-hydroxyphenyl ketone ; Phenol, p-acetyl- ; Piceol ; p-Acetylphenol ; p-Hydroxyacetophenone ; p-Hydroxyphenyl methyl ketone ; p-Oxyacetophenone .