title: Cyclobutane dimers of 1-methylthymine: isolation, identification and properties.
mesh_terms: D002854:Chromatography, Paper; D002855:Chromatography, Thin Layer; D003503:Cyclobutanes / Q000138:chemical synthesis* / Q000302:isolation & purification; D008722:Methods; D008745:Methylation; D010777:Photochemistry; D011830:Radiation Effects; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism; D013941:Thymine / Q000138:chemical synthesis / Q000302:isolation & purification / Q000528:radiation effects*; D014466:Ultraviolet Rays
chemical_list: D003503:Cyclobutanes; D013941:Thymine