4,4'-DDA, 100mg Back Catalog number: 681820 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 677645 Sulfachloropyridazine, 100 µg/ml, Acetonitrile, Price on request 0707.14-500-IO 1,4,6,7-Tetramethylnaphthalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 13764-18-6 Price on request 679103 Paromomycin sulfate, 100mg Price on request