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Structure elucidation of a novel analogue of pesticide from express post parcel by HRMS

Authors
  • Fang, Mingchih1
  • Tsai, Chia-Fen2
  • Wang, Der-Yuan2
  • Cheng, Hwei-Fang2
  • 1 National Taiwan Ocean University, Department of Food Science, Beining Road, No. 2, Keelung City, 20224, Taiwan , Keelung City (Taiwan)
  • 2 Taiwan Food and Drug Administration, Division of Research and Analysis, Taipei, Taiwan , Taipei (Taiwan)
Type
Published Article
Journal
SN Applied Sciences
Publisher
Springer International Publishing
Publication Date
Nov 12, 2019
Volume
1
Issue
12
Identifiers
DOI: 10.1007/s42452-019-1645-3
Source
Springer Nature
Keywords
License
Yellow

Abstract

An express post parcel was confiscated due to the stuff was not equal to the named stuff. HPLC coupled with high resolution mass spectrometry (HRMS) was applied to separate and elucidate the unknown by the combination of the accurate molecular weight, isotope ratio, and fragments. Nuclear magnetic resonance spectroscopy was performed for further confirmation. A new derivative of pesticide chlorantraniliprole was found and first reported. The pesticide analogue named 3-Bromo-1-(3-chloro-2-pyridinyl)-N-[2,4- dichloro-6-(isopropylcarbamoyl) henyl]-1H-pyrazole- 5-carboxamide. The derivative of chlorantraniliprole was not able to be detected by any routine pesticide residue analysis. It could be illegally used in claimed organic food or any natural vegetable. Besides, the dishonest people import illegal chemical through express post parcel without registering to any authority, made hazardous chemical transportation management very hard, as well the prevention of the entry of chemicals into food chain.

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