FIELD: chemistry.
SUBSTANCE: present invention relates to organic chemistry and specifically to a novel chemical compound - fluorescent dye of etidium ethylsulphate (3,8-diamino-5-ethyl-6- phenylphenantridium ethyl sulphate) of formula I 
which increases fluorescence intensity when exposed to UV light as a result of bonding with nucleic acids.
EFFECT: obtaining a novel compound which can be used to detect DNA.
1 cl, 2 dwg, 4 ex
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