title: Mestranol: the assignment of its 1H and 13C NMR spectra by means of two-dimensional NMR spectroscopy, and its photochemical decomposition.
abstract: The 1H- and 13C-nmr spectra of mestranol were assigned with the help of a 2 D-J-resolved, a 2D spin echo J-correlated (SECSY) and a 2D 1H-13C hetero-shift correlation experiment. The analysis of the spectra facilitated the identification of some of the photodecomposition products of mestranol. It was shown that, upon irradiation with UV-B light in water-ethanol (1:1, v/v), products are formed by oxidation of rings B and C of the steroid.
mesh_terms: D002247:Carbon Isotopes; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008656:Mestranol / Q000528:radiation effects / Q000633:toxicity; D010777:Photochemistry; D011522:Protons; D012486:Salmonella typhimurium / Q000187:drug effects
chemical_list: D002247:Carbon Isotopes; D011522:Protons; D008656:Mestranol