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In its chemical structure, a molecule of cresol has a methyl group substituted onto the ring of phenol. There are three forms of cresol: ortho-cresol (o-cresol), meta-cresol (m-cresol), and para-cresol (p-cresol). These forms occur separately or as a mixture, which can also be called cresol or more specifically, tricresol.
p-Cresol is a major component in pig odor. [11] Temporal glands secretion examination showed the presence of phenol and p-cresol during musth in male elephants. [12] [13] It is one of the very few compounds to attract the orchid bee Euglossa cyanura and has been used to capture and study the species.
ortho-Cresol (IUPAC name: 2-methylphenol, also known as 2-hydroxytoluene or ortho-Toluenol) is an organic compound with the formula CH 3 C 6 H 4 (OH). It is a colourless solid that is widely used intermediate in the production of other chemicals. It is a derivative of phenol and is an isomer of p-cresol and m-cresol. [3]
meta-Cresol, also 3-methylphenol, is an organic compound with the formula CH 3 C 6 H 4 (OH). It is a colourless, viscous liquid that is used as an intermediate in the production of other chemicals. It is a derivative of phenol and is an isomer of p-cresol and o-cresol. [3]
Segment of novolak, illustrating the predominance of cresol subunits and presence of crosslinking. Novolaks (sometimes: novolacs) are low molecular weight polymers derived from phenols and formaldehyde. They are related to Bakelite, which is more highly crosslinked.
Creosol is a chemical compound with the molecular formula C 8 H 10 O 2. It is one of the components of creosote . Compared with phenol , creosol is a less toxic disinfectant .
p-Chlorocresol, or 4-chloro-3-methylphenol (ClC 6 H 3 CH 3 OH), also known as p-chloro-m-cresol, is a potent disinfectant and antiseptic. [1] It appears as a pinkish white crystalline solid. [ 2 ] It is also used as a preservative [ 3 ] in cosmetics and medicinal products for both humans and animals.
Cresol red can also be used as an electrophoretic color marker to monitor the process of agarose gel electrophoresis and polyacrylamide gel electrophoresis.In a 1% agarose gel, it runs approximately at the size of a 125 base pair (bp) DNA molecule (it depends on the concentration of buffer and other component).