Code : P-137
Castoreum is the exudate from the castor sacs of the mature North American Beaver and the European Beaver within the zoological realm. Castoreum is derived from the Greek word Kastor meaning beaver. Castoreum is obtained from the animal source Caster Canadensis. The castor sacs are not true glands (endocrine or exocrine) on a cellular level, hence references to these structures as preputial glands or castor glands are misnomers. Castor sacs are a type of scent gland.