Valeraldehyde, 1000µg/ml in Water, 1ml Back Catalog number: 71767 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3138.13-K-IO Tridecanoic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 638-53-9 Price on request 73491 Fexofenadine, 1000µg/ml in MeOH, 1ml Price on request 81203 EPA Method 8121 Internal Standard Price on request