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 684588 Propoxycarbazone sodium, 100 μg/ml in MeOH, 1ml Price on request 10817.7-1G Benzoic acid sodium salt Price on request 97154 Semi-Volatile Mix #1 Price on request