Compound Monograph
Calein B
Calein B is a sesquiterpene lactone isolated from Calea species ("bitter grass"), closely related to calein A.
Sources · 1
Where Does It Come From?
Calein B is a naturally occurring sesquiterpene lactone, found in Bitter grass.
Concentration
Content by Source
Concentrations not reported. No percent-dry-weight or mg/g figures have been published for this compound in its source plants.
Research & Evidence
Calein B is a sesquiterpene lactone isolated from Calea species (“bitter grass”), structurally a close isomer of calein A. As with the related caleins, little beyond its isolation and structure from these plants has been established.
