radiochemical

/R EY1 D IY0 OW0 K EH1 M IH0 K AH0 L/
noun
  1. 1

    Any compound containing one of more atoms of a radioactive isotope; a radiolabel or radiotracer

adjective
  1. 1

    Of or pertaining to radiochemistry

  2. 2

    Describing a chemical change that is the result of ionizing radiation

Source: https://en.wiktionary.org/wiki/radiochemical