title: POLARIZED ABSORPTION SPECTRA OF SINGLE CRYSTALS OF 1-METHYLTHYMINE, 9-METHYLADENINE, AND THEIR HYDROGEN-BONDED COMPLEX.
mesh_terms: D000225:Adenine / Q000031:analogs & derivatives; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004583:Electrons; D006859:Hydrogen; D013057:Spectrum Analysis; D013941:Thymine / Q000031:analogs & derivatives
chemical_list: C030630:1-methylthymine; C013115:9-methyladenine; D006859:Hydrogen; D000225:Adenine; D013941:Thymine
keywords: ADENINE; CHEMISTRY, PHYSICAL; ELECTRONS; HYDROGEN; SPECTRUM ANALYSIS; THYMINE