Acephate is an organophosphorus reference compound with CAS number 30560-19-1 and empirical formula C₄H₁₀NO₃PS, offered here as ROTICHROM® Pestilyse® HPLC material for chromatographic and environmental analysis work. The substance has a molar mass of 183,17 g/mol and a density of 1,35 g/cm³, supporting accurate preparation of standards and calibration solutions. This 100 mg glass pack from manufacturer Carl ROTH is intended for gas chromatography and related HPLC applications within environmental analysis workflows, where defined reference quality is required for method development, residue studies and routine quantification. The ROTICHROM® Pestilyse® HPLC designation identifies the material for pestilyse-oriented chromatographic use. Laboratories engaged in environmental monitoring, residue analysis and chromatographic method work can integrate this acephate standard into existing sample-preparation and instrumental sequences. The compact 100 mg fill suits laboratories that need controlled quantities for standard solutions without excess bulk material on hand. This article is part of Chromatography standards (GC, HPLC, pesticides), in Analytical standards & reference materials. Key features Assay: ≥96 % CAS number: 30560-19-1 Pack size: 100 mg glass EG nr.: 250-241-2 Empirical formula: C₄H₁₀NO₃PS Molar mass: 183,17 g/mol Density: 1,35 g/cm³ Technical Information Sheet: Safety Data Sheet: