聚肌苷酸，又名多聚肌苷酸，英文名为polyinosinic acid，分子式是C10H13N4O8P，分子量为348.206，CAS登记号为30918-54-8，聚合物一种。(1S)-1，4-Anhydro-1-(6-oxo-6，9-dihydro-3H-purin-8-yl)-5-O-phosphono-D-ribitol; D-ribitol， 1，4-anhydro-1-C-(6，9-dihydro-6-oxo-3H-purin-8-yl)-， 5-(dihydrogen phosphate)， (1S)-; [(2R，3S，4R，5S)-3，4-dihydroxy-5-(6-oxo-3，9-dihydropurin-8-yl)tetrahydrofuran-2-yl]methyl dihydrogen phosphate