1-HYDROXYNAPHTHALENE (1-NAPHTHOL) (13C6, 99%) 50 UG…

DL-ESTRADIOL (13,14,15,16,17,18-13C6, 99%)…

TRIMETHOPRIM (PYRIMIDINE-4,5,6-13C3, 99%) 50 UG/ML …

PENTACHLOROANISOLE (13C6, 99%) 100 UG/ML IN TOLUEN…

PERFLUOROOCTANOIC ACID (PFOA) (13C8, 99%) 50 UG/ML…

2,6-DIBROMOPHENOL (13C6, 99%) 100 UG/ML IN TOLUENE…

HEXACHLOROPHENE (13C13, 99%) 50 UG/ML IN METHANOL…

DL-2-HYDROXYESTRONE (13,14,15,16,17,18-13C6, 99%)…

DL-2-HYDROXYESTRADIOL (13,14,15,16,17,18-13C6, 99%)…

DIBENZO[A,L]PYRENE (13C6, 99%) 100 UG/ML IN NONANE…