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

DL-2-HYDROXYESTRONE-3-METHYL ETHER (13,14,15,16,17,…

DL-4-METHOXYESTRONE (13,14,15,16,17,18-13C6, 99%)…

DL-SODIUM ESTRONE 3-SULFATE (12-13%- SODIUM ACETATE…

DL-4-METHOXYESTRADIOL (13,14,15,16,17,18-13C6, 99%)…

ESTRADIOL (3,4-13C2, 99%) 100 UG/ML IN ACETONITRIL…

CIS-CHLORDANE (13C10, 99%) 100 UG/ML IN NONANE…

GUAIACOL (RING-13C6, 99%)…

ACRYLAMIDE (1,2,3-13C3, 99%)…

HYDROXYATRAZINE (RING-13C3,99%)100 UG/ML IN 80%H2O/…