2-Amino-1,9-dihydro-6H-purin-6-one-4,5-13C2, 7-15N; 2-Amino-6-hydroxy-1H-purine-4,5-13C2, 7-15N; 2-Amino-6-hydroxypurine-4,5-13C2, 7-15N; 2-Aminohypoxanthine-4,5-13C2, 7-15N; 9H-Guanine-4,5-13C2, 7-15N; 2-Aminohypoxanthine-4,5-13C2, 7-15N;

Labeled Guanine. Guanine is on one of the five nucleobases incorporated into biological nucleic acids. Guanine, along with adenine and cytosine, is present in both DNA and RNA, whereas thymine is usually seen only in DNA, and uracil only in RNA.