Levonorgestrel, 100µg/mL in Acetonitrile, 1ml Back Catalog number: A14629760AL-100 Availability: In the manufacturer's stock Price on request - + Recommended L429-AS Method 429 Alternate Standard Stock Solution, 1.2ml, isooctane Price on request 70328 Aldicarb sulfone Price on request 90291 Perylene-d12 Price on request