Analyte: 4-Nitroanisole, CAS Number: 100-17-4; Analyte: DCPA, CAS Number: 1861-32-1; Analyte: Acifluorfen methyl ester, CAS Number: 50594-67-7; Analyte: Bentazon methyl derivative, CAS Number: 61592-45-8; Analyte: Dichlorprop methyl ester, CAS Number: 57153-17-0; Analyte: 2,4-D methyl ester, CAS Number: 1928-38-7; Analyte: Dalapon methyl ester, CAS Number: 17640-02-7; Analyte: Dicamba methyl ester, CAS Number: 6597-78-0; Analyte: Dinoseb methyl ether, CAS Number: 6099-79-2; Analyte: Methyl 3,5-dichlorobenzoate, CAS Number: 2905-67-1; Analyte: 2,4-DB methyl ester, CAS Number: 18625-12-2; Analyte: Chloramben methyl ester, CAS Number: 7286-84-2; Analyte: 2,4,5-T methyl ester, CAS Number: 1928-37-6; Analyte: Silvex methyl ester, CAS Number: 4841-20-7; Analyte: MCPA methyl ester, CAS Number: 2436-73-9; Analyte: Pentachloroanisole, CAS Number: 1825-21-4; Analyte: MCPP methyl ester, CAS Number: 23844-56-6 ; . EPA, Method: 8051A.