On the quantitative determination of chamazulene and prochamazulenes in essential oils and crude drugs from yarrow (Achillea sp.--Compositae). II.: A new colorimetric method of high sensitivity for determination of chamazulene in the essential oils.

@article{VerzrPetri1977OnTQ,
  title={On the quantitative determination of chamazulene and prochamazulenes in essential oils and crude drugs from yarrow (Achillea sp.--Compositae). II.: A new colorimetric method of high sensitivity for determination of chamazulene in the essential oils.},
  author={G Verz{\'a}r-Petri and B N Cuong},
  journal={Acta pharmaceutica Hungarica},
  year={1977},
  volume={47 3},
  pages={134-41}
}