title: Measurements of the photodegradation of PABA and some PABA derivatives.
abstract: The photodegradation of 4-aminobenzoic acid, 2-ethylhexyl N,N-dimethyl 4-aminobenzoate (Escalol 507) and 1-glyceryl 4-aminobenzoate (Escalol 106), resulting from irradiation by sun lamps, was examined by UV spectroscopy. 2-ethylhexyl N,N-dimethyl 4-aminobenzoate showed the longest half-life, indicating the highest photostability.
authors.affiliation: Department of Dermatology, Ullevaal Hospital, Oslo, Norway.
authors.forename: H
authors.initials: H
authors.lastname: Flindt-Hansen
authors.forename: C J
authors.initials: CJ
authors.lastname: Nielsen
authors.forename: P
authors.initials: P
authors.lastname: Thune
mesh_terms: D010129:4-Aminobenzoic Acid / Q000378:metabolism*; D000042:Absorption; D062365:Aminobenzoates / Q000378:metabolism*; D010777:Photochemistry; D013053:Spectrophotometry; D013472:Sunlight; D014466:Ultraviolet Rays; D062366:para-Aminobenzoates
chemical_list: D062365:Aminobenzoates; D062366:para-Aminobenzoates; D010129:4-Aminobenzoic Acid