[phosphate ester of a guanine nucleoside, particularly the 5'-phosphate of guanine in N-glycosidic linkage with ribose or deoxyribose as occurs in nucleic acid. ( CSP )]
UMLS (CSP) C0018328 - Nucleic Acid, Nucleoside, or Nucleotide
Relation/PAR: purine nucleotide
Relation/CHD: GDP
GTP
GMP