High‐performance liquid chromatographic mass spectrometric identiﬁcation of the photoproducts of cymoxanil | Zendy

Morrica Patrizia | Zendy; Fidente Paola | Zendy; Seccia Serenella | Zendy

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High‐performance liquid chromatographic mass spectrometric identiﬁcation of the photoproducts of cymoxanil

Author(s) -

Morrica Patrizia,

Fidente Paola,

Seccia Serenella

Publication year - 2005

Publication title -

biomedical chromatography

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.4

H-Index - 65

eISSN - 1099-0801

pISSN - 0269-3879

DOI - 10.1002/bmc.471

Subject(s) - chemistry , acetamide , high performance liquid chromatography , chromatography , aqueous solution , photodissociation , degradation (telecommunications) , mass spectrometry , photochemistry , organic chemistry , telecommunications , computer science

The photochemical degradation of the fungicide cymoxanil {2‐cyano‐ N ‐[(ethylamino)carbonyl]‐2‐(methoxyimino) acetamide} was studied in aqueous buffer solution (pH 5.9 ± 0.1) under UV light and in laboratory conditions. The degradation followed a pseudo‐rst‐order kinetic with signicant correlation coefcient. The main photoproducts were separated and tentatively identied by HPLC/UV and HPLC/MS data, as 3‐ethyl‐4‐(methoxyamino)‐2,5‐dioxo‐4‐imidazolidinecarbonitrile, 1‐ethyl‐5‐(methoxyimino)‐2,4‐imidazolidin‐2,4‐dione, ethylimidazolidinetrione and {[(ethylamino)carbonyl]‐amino}oxoacetic acid. A photolysis pathway of cymoxanil is proposed. Copyright © 2005 John Wiley & Sons, Ltd.

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