Figure 1: Structures of thymol structural related analogs.

(a) 2-isopropyl-5-methylphenol (thymol); (b) 5-isopropyl-2-methylphenol (carvacrol); (c) 2-isopropylphenol; (d) 3-isopropylphenol; (e) 4-isopropylphenol.