Synthesis of purines under possible primitive earth conditions. II. Purine intermediates from hydrogen cyanide.
D018534:Earth, Planet; D006856:Hydrogen Cyanide / Q000737:chemistry*; D011687:Purines / Q000737:chemistry*
D011687:Purines; D006856:Hydrogen Cyanide; C030985:purine
HYDROCYANIC ACID/chemistry; PURINES/chemistry