Highlights ► 5-Substituted hydantoins are the photochemical precursors of hydantoin. ► UV-irradiated 5-substituted hydantoins are the hydrolytic precursors of Gly and Ala. ► Stability of hydantoins against UV radiation is: Hyd≫M-Hyd>E-Hyd≧DM-Hyd≧EM-Hyd.

    Abstract Aqueous solutions of 5-substituted hydantoins were irradiated with ultraviolet (UV) light, to investigate their structural stability against UV radiation as well as the possible photolysis products. The photolysis products were identified and the degree of photolysis was measured using reversed-phase and ion-exchange high-performance liquid chromatography. Hydantoin (2,4-imidazolidinedione) was dominantly detected as a photolysis product of 5-substituted hydantoins. With hydrolysis of UV-irradiated 5-substituted hydantoins, glycine and alanine were dominantly detected. These experimental results are important for the prebiotic photochemistry of 5-substituted hydantoins in the formation of hydantoin since they have been detected in Solar System materials.


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    Titel :

    Photo-alteration of hydantoins against UV light and its relevance to prebiotic chemistry


    Beteiligte:

    Erschienen in:

    Advances in Space Research ; 51 , 12 ; 2235-2240


    Erscheinungsdatum :

    2013-01-29


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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