| CPC C09K 11/06 (2013.01) [C07D 401/06 (2013.01); G01N 1/30 (2013.01); G01N 21/6428 (2013.01); G01N 33/582 (2013.01); C09K 2211/1018 (2013.01); G01N 2001/302 (2013.01); G01N 2021/6439 (2013.01)] | 10 Claims |

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1. An RNA fluorescent probe for rapidly distinguishing cancer tissue from normal tissue, wherein a chemical name of the RNA fluorescent probe is (E)-1-(3-aminopropyl)-4-(2-(3-(9-ethyl-carbazol))vinyl)pyridine dibromide salt, abbreviated as CAPY-AP; a chemical structure of the RNA fluorescent probe is shown in formula (I):
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