trans-beta-Carotene Back Catalog number: 71678 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0046.20-100-T 3-Nitroperylene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 20589-63-3 Price on request 94436 Naphthalene Price on request 678495 Pyridaphenthion, 100 µg/ml, Acetonitrile, 5ml Price on request