Propionic Acid (C3H6O2) Back Catalog number: 50678 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1538.18-K-TX5 Triphenylene-d12, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 17777-56-9 Price on request S680512 Spermine-d20, 1mg Price on request 9565.24-50-AN 6:2 TriPAPS, 50µg/mL, Solvent-acetonotrile, Unit 1mL, # of units-1, Cas.no. Price on request