Retention Time Marker Solution Iowa OA-2 Back Catalog number: 51183 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1581.2-100MG Dicyanodiamide (Cyanoguanidine), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 461-58-5 Price on request 70899 6-Methylchrysene Price on request 688495 Terbuthylazine-2-hydroxy, 100µg/ml in Acetone, 1ml Price on request