Subsequently, by
means of nuclear magnetic resonance (NMR) and infrared
(IR) spectroscopy, cordycepin as a bioactive component was
extracted from the fruiting bodies and cultured mycelium of
C. sinensis and the configuration elucidated. The molecular
weight of cordycepin, C10H13N5O3, is 251. Its melting point is
230–231∞C, and maximum absorption is at 259 nm. It can be
dissolved in saline,warm alcohol or methanol, but not in
benzene, ether or chloroform, so many researchers in
laboratories used sterilized saline and phosphate-buffered
saline (PBS) as solvent.[25] In general, the content of 3
0
-dA in
the mycelia fermentation preparations