Analyte: o-Cresol, CAS Number: 95-48-7; Analyte: m-Cresol, CAS Number: 108-39-4; Analyte: p-Cresol, CAS Number: 106-44-5; Analyte: 2,4-Dimethylphenol, CAS Number: 105-67-9; Analyte: 2,4-Dinitrophenol, CAS Number: 51-28-5; Analyte: Phenol, CAS Number: 108-95-2; Analyte: Thiophenol, CAS Number: 108-98-5 ; . EPA, Method: 8270D.