title: Chemical evolution. 18. Synthesis of pyrimidines from guanidine and cyanoacetaldehyde.
mesh_terms: D000079:Acetaldehyde; D000114:Acetylene; D005075:Biological Evolution; D003485:Cyanates; D003596:Cytosine; D006146:Guanidines; D006868:Hydrolysis; D007700:Kinetics; D008956:Models, Chemical; D011743:Pyrimidines / Q000138:chemical synthesis*; D014498:Uracil
chemical_list: D003485:Cyanates; D006146:Guanidines; D011743:Pyrimidines; D014498:Uracil; D003596:Cytosine; D000079:Acetaldehyde; D000114:Acetylene