The chemical Guanine has a designated molecular formula of C5H5N5O and a molecular weight of 151.129 g/mol. Synonyms may include: C.I. 75170, C.I. Natural White 1, AI3-24393, 2-Amino-6-hydroxypurine, 2-Aminohypoxanthine, CI 75170, CI Natural white 1, Dew Pearl, EINECS 200-799-8, Guanin, Guanine enol, HSDB 2127 (ChemID).