Tolpyralate, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 682369 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 679294 Isopropylparaben, 25mg Price on request 682199 2-Nitrotoluene, 250mg Price on request 70912 1,4-Dinitrobenzene, 1000µg/ml in MeOH, 1ml Price on request