Sulfapyridine, 100 µg/ml, Methanol, 1ml Back Catalog number: 679819 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 92131-1G Trimethoprim, >99%, 1g Price on request 94741 4-Aminoazobenzene Price on request 673276 Ethirimol, 10 µg/ml, Acetonitrile, 10ml Price on request