O-乙基-O-(4-硝基苯基)苯基硫代磷酸酯

This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to primary material from an NMI, e.g. NIST or NMIJ.
Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate.
Download your certificate at: http://www.sigma-aldrich.com

EPN is a non-systemic organophosphate insecticide that inhibits the activity of acetylcholinesterase (AChE) and causes hyper excitation. Activated by contact and ingestion, it is used for protection against lepidopteran and other leaf-eating larvae.
As per Regulation (EC) No. 1107/2009, repealing directive 91/414/EEC, EPN is not approved for use in the European Union as a plant protection agent.

The certified reference material (CRM) is intended to be used as a calibrant for chromatography and other analytical techniques.
EPN CRM may find the following uses:

• Development of a method to analyze 142 insecticide residues in weed and agricultural crops samples by dispersive solid-phase extraction (d-SPE) extraction and liquid chromatographic-mass spectrometric determination (LC-MS)
• Simultaneous analysis of eight pesticide residues in green tea leaves and infusion samples by gas chromatography (GC) micro electron capture detector (μECD), followed by a confirmation using GC/tandem mass spectrometry (GC/MS/MS)
• Employing thin-layer chromatography/direct analysis in real-time time-of-flight mass spectrometry (TLC/DART-TOFMS) along with isotope dilution technique for the determination of organophosphorus insecticides in dumpling and grapefruit samples
• Multi-analysis of 131 pesticide residues in different types of tea samples by dispersive solid-phase extraction (d-SPE) and gel permeation chromatography-gas chromatography-tandem mass spectrometry (GPC-GC-MS/MS)
• Qualitative and quantitative analysis of 412 pesticide residues from different chemical classes in cotton samples using GC-MS/MS and LC-MS/MS
• Investigate the presence of 160 pesticide residues simultaneously in chamomile, thyme, and marjoram samples by GC-MS/MS

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

TraceCERT is a registered trademark of Merck KGaA, Darmstadt, Germany