Which of the following agents is not related chemically to phenol (carbolic acid)?
a. hexachlorophene (pHisoHex) c. cresol (Lysol)
b. resorcinol d. chlorhexidine (Hibiclens)
ANS: D
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A Incorrect: This is related to phenol as a bisphenol composed of two phenolic groups.
B Incorrect: Used in the topical treatment of psoriasis, this is related to phenol.
C Incorrect: Lysol is a phenol.
D Correct: Hibiclens is a cationic bisbiguanide, not related chemically to phenol.
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