"14620066-n"^^ . . . "113783223"@en-us . . "0"^^ . "114620066"^^ . . . "a radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction"@en-us . . . . "110472538"@en-us . . "0"^^ . "label"^^ . . . . "label"@en-us . . . .