Synonyms: Acebutolol Hydrochloride Imp. C (EP), Acebutolol Imp. C (EP), Acebutolol USP Related Compound A, Acebutolol USP RC A, N-(3-Acetyl-4-hydroxyphenyl)butanamide, Acebutolol Related Compound A, Acebutolol Hydrochloride Impurity C, Acebutolol Impurity C.