dear researcher

this link may be help you

best regards

https://www.sigmaaldrich.com/technical-documents/articles/analytical-applications/hplc/hplc-analysis-of-cresols-and-phenol-g004731.html

Check the websites for Waters, Agilent, Phenomenex, and Restek for HPLC applications.

What mixture are you referring to. If you want to measure the cresol isomers against a huge concentration of similar components, you are in trouble.

Maybe the next papers can help you.

Article Determination of phenol, m-, o- and p-cresol, p-aminophenol ...

http://www.chemijournal.com/archives/2017/vol5issue4/PartE/5-4-11-999.pdf

dear researcher

this link may be help you

best regards

https://www.sigmaaldrich.com/technical-documents/articles/analytical-applications/hplc/hplc-analysis-of-cresols-and-phenol-g004731.html

Nice, but it depends on your sample matrix and expected concentration. The above chromatogram didn’t tell you much.

yes, therefore I said my be,

the HPLC needs many experiment in front of pretense of ready procedure of any compounds,

the parameter of analysis done, different from apparatus to apparatus,

I am worked on a different HPLC company.

and get different result with the same parameter.

best regards

Commercial HPLC testkits for cresols in urine are offer by Recipe (Munic, Germany) and Chromsystems (Munic, Germany).