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• W4311153979 endingPage "8796" @default.
• W4311153979 startingPage "8796" @default.
• W4311153979 abstract "Octyl methoxycinnamate (OMC) is a common UVA and UVB filter molecule that is widely used in commercial sunscreens. Here, we used gas-phase laser photodissociation spectroscopy to characterise the intrinsic photostability and photodegradation products of OMC by studying the system in its protonated form, i.e., [OMC·H]+. The major photofragments observed were m/z 179, 161, and 133, corresponding to fragmentation on either side of the ether oxygen of the ester group (m/z 179 and 161) or the C-C bond adjacent to the ester carbonyl group. Additional measurements were obtained using higher-energy collisional dissociation mass spectrometry (HCD-MS) to identify fragments that resulted from the breakdown of the vibrationally hot electronic ground state. We found that the m/z 179 and 161 ions were the main fragments produced by this route. Notably, the m/z 133 ion was not observed through HCD-MS, revealing that this product ion is only produced through a photochemical route. Our results demonstrate that UV photoexcitation of OMC is able to access a dissociative excited-state surface that uniquely leads to the rupture of the C-C bond adjacent to the key ester carbonyl group." @default.
• W4311153979 created "2022-12-24" @default.
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• W4311153979 date "2022-12-12" @default.
• W4311153979 modified "2023-09-30" @default.
• W4311153979 title "Photochemical Degradation of the UV Filter Octyl Methoxy Cinnamate Probed via Laser-Interfaced Mass Spectrometry" @default.
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• W4311153979 doi "https://doi.org/10.3390/molecules27248796" @default.
• W4311153979 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36557928" @default.
• W4311153979 hasPublicationYear "2022" @default.
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