pterin-6-carboxylic acid

2- amino-1,4-dihydro-4-oxopteridine-6-carboxylic acid 2- amino-4-oxo-1H-pteridine-6-carboxylic acid 6- pteridinecarboxylic acid, 2-amino-1,4-dihydro-4-oxo- PubMed: Stability of folic acid under several parameters. PubMed: Folic acid and its photoproducts, 6-formylpterin and pterin-6-carboxylic acid, as generators of reactive oxygen species in skin cells during UVA exposure. PubMed: Capillary electrophoresis of pterin derivatives responsible for the warning coloration of Heteroptera. PubMed: Determination of pterins in urine by HPLC with UV and fluorescent detection using different types of chromatographic stationary phases (HILIC, RP C8, RP C18). PubMed: Photodegradation of folate sensitized by riboflavin. PubMed: Identification of a fluorescent compound in the cuticle of the train millipede Parafontaria laminata armigera. PubMed: Investigation of urinary pteridine levels as potential biomarkers for noninvasive diagnosis of cancer. PubMed: Influence of human serum albumin on photodegradation of folic acid in solution. PubMed: [Time course of the content of folates and free amino acids in leaves of Pisum sativum L. after irradiation with ultraviolet C]. PubMed: Ultraviolet photodegradation of folic acid. PubMed: Effects of intracellular reactive oxygen species generated by 6-formylpterin on T cell functions. PubMed: Identification of photoproducts of folic acid and its degradation pathways in aqueous solution. PubMed: [Effect of ultraviolet C irradiation on folate and free amino acid contents in leaves of Pisum sativum]. PubMed: Oxidative stress in vitiligo: photo-oxidation of pterins produces H(2)O(2) and pterin-6-carboxylic acid. PubMed: Purification and properties of a folate-catabolizing enzyme. PubMed: Pteridine analysis in urine by capillary electrophoresis using laser-induced fluorescence detection. PubMed: Pteridine fluorescence for age determination of Anopheles mosquitoes. PubMed: Structure-based identification of a ricin inhibitor. PubMed: The (2R)-hydroxycarboxylate-viologen-oxidoreductase from Proteus vulgaris is a molybdenum-containing iron-sulphur protein. PubMed: Pterins inhibit nitric oxide synthase activity in rat alveolar macrophages. PubMed: Purification and some properties of the tungsten-containing carboxylic acid reductase from Clostridium formicoaceticum. PubMed: The molybdoenzyme formylmethanofuran dehydrogenase from Methanosarcina barkeri contains a pterin cofactor. PubMed: The pigments in the dorsal skin of frogs. PubMed: Identification of the second chromophore of Escherichia coli and yeast DNA photolyases as 5,10-methenyltetrahydrofolate. PubMed: The oxidation product of molybdenum cofactor from milk xanthine oxidase. PubMed: Structural elements of bactopterin from Pseudomonas carboxydoflava carbon monoxide dehydrogenase. PubMed: Evaluation of pteridines in patients with different tumors. PubMed: Molybdopterin cofactor from Methanobacterium formicicum formate dehydrogenase. PubMed: Separation of pteridines from blood cells and plasma by reverse-phase high-performance liquid chromatography. PubMed: Urinary excretion levels of unconjugated pterins in cancer patients and normal individuals. PubMed: Separation of unconjugated pteridines by high-pressure cation-exchange liquid chromatography.