What are cresols?

1 Answer
May 8, 2016

It's a common name for a methylphenol or hydroxytoluene, take your pick.

There are only three cresols: o-cresol, m-cresol, and p-cresol, due to the symmetric nature of benzene. Their densities are similar. They each have a hydroxyl group and a methyl group.

These are ortho, meta, and para isomers, which indicate 1,2, 1,3, and 1,4 substitutions, respectively.

https://upload.wikimedia.org/

They can be used as precursors to synthesize things like bromocresol green (a pH indicator, green at #"pH" = 3.8~5.4#), butylated hydroxytoluene (an antioxidant), and so on.