PHOTOPRODUCTS FORMED BY NEAR-UV IRRADIATION OF THYMINE IN THE PRESENCE OF P-AMINOBENZOIC ACID

Authors
ALIWELL SR MARTINCIGH BS SALTER LF
Citation
Sr. Aliwell et al., PHOTOPRODUCTS FORMED BY NEAR-UV IRRADIATION OF THYMINE IN THE PRESENCE OF P-AMINOBENZOIC ACID, Journal of photochemistry and photobiology. A, Chemistry, 83(3), 1994, pp. 223-228
Citations number
17
Categorie Soggetti
Chemistry Physical
Journal title
Journal of photochemistry and photobiology. A, Chemistry → ACNP
ISSN journal
10106030
Volume
83
Issue
3
Year of publication
1994
Pages
223 - 228
Database
ISI
SICI code
1010-6030(1994)83:3<223:PFBNIO>2.0.ZU;2-2
Abstract
In addition to the four isomers of cyclobutane thymine dimes, two non- dimer photoproducts of thymine (5,6-dihydrothymine and 5-hydroxymethyl uracil) were detected when free thymine base was irradiated at 324 nm in the presence of p-aminobenzoic acid (PABA) at pH 7.0. The yields we re found to be enhanced in the presence of phosphate buffer, Irradiati on of thymidine at 324 nm in the presence of PABA lead to the formatio n of 5,6-dihydrothymidine.