chloroatranorin

English

Etymology

From chloro- +‎ atranorin.

Noun

chloroatranorin (uncountable)

1. (organic chemistry) One of the most common allergens found in treemoss, along with atranorin, having the same molecular structure as atranorin but with one of the hydrogen atoms replaced by a chlorine atom.
   • 1963, Journal of the Indian Chemical Society, volume 40, page 8:

     The method of purification described by St. Pfau by repeated crystallisation from chloroform, in which chloroatranorin was sparingly soluble, was laborious and incomplete over a number of stages.

   • 2012, Ilse Kranner, Richard Beckett, Ajit Varma, Protocols in Lichenology, page 291:

     It may be important to distinguish atranorin and chloroatranorin.

   • 2021, Anton C. de Groot, Monographs in Contact Allergy, page 268:

     Of chemicals relevant for sensitization, a typical industrial treemoss absolute oil (which is also an extract) may contain approximately 0.36% atranol, 0.22% chloratranol and 5-6% dehydroabietic acid and other resin acids (including the allergenic 7-oxodehydroabietic acid), but undetectable levels of atranorin and chloroatranorin, as these are easily degraded into atranol and chloroatranol (20).