Ethynylestradiol (20,21-13C2,99%) 100 µg/mL in Acetonitrile, 1,2ml Back Catalog number: CLM-3375-1.2 Availability: In the manufacturer's stock Price on request - + Recommended 3752.10-50-IO 1,2,3,4-Tetrachloro-1,2,3,4-tetrahydronaphthalene, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 1569.18-100MG Norcodeine, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 467-15-2 Price on request 79246 EPA Method 8330 Analyte Price on request