[1] Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216. DOI:
10.1177/1060028018797110[2] ORO J, et al. Synthesis of purines under possible primitive earth conditions. I. Adenine from hydrogen cyanide. Arch Biochem Biophys. 1961 Aug;94:217-27. DOI:
10.1016/0003-9861(61)90033-9[3] Griffiths AJF, et al. An Introduction to Genetic Analysis. 7th edition. New York: W. H. Freeman 2000. Structure of DNA.
[4] Reader V. The assay of vitamin B(4). Biochem J. 193024(6):1827-31. DOI:
10.1042/bj0241827