title: Chemistry of guanine and its biologically significant derivatives.
mesh_terms: D000478:Alkylation; D055598:Chemical Phenomena; D002621:Chemistry; D006147:Guanine / Q000032:analysis; D006150:Guanine Nucleotides; D006219:Halogens; D006863:Hydrogen-Ion Concentration; D008027:Light; D009573:Nitrites; D009705:Nucleosides / Q000032:analysis; D010084:Oxidation-Reduction; D013053:Spectrophotometry; D013237:Stereoisomerism
chemical_list: D006150:Guanine Nucleotides; D006219:Halogens; D009573:Nitrites; D009705:Nucleosides; D006147:Guanine