Salicylaldehyde be prepared from the corresponding phenol by the Duff reaction, or by treatment with paraformaldehyde in the presence of magnesium chloride and a base. Salicylaldehyde was identified as a characteristic aroma component of buckwheat. It is also one of the components of castoreum, the exudate from the castor sacs of the mature North American beaver ("Castor canadensis") and the European beaver ("Castor fiber"), used in perfumery. Furthermore, salicylaldehyde occurs in the larval defensive secretions of several leaf beetle species that belong the subtribe Chrysomelina. An example for a leaf beetle species that produces salicylaldehyde is the red poplar leaf beetle
UCPH School of Veterinary Medicine and Animal Science UCPH School of Veterinary Medicine and Animal Science The UCPH School of Veterinary Medicine and Animal Science (UCPH Vetschool) is part of the Faculty of Health and Medical Sciences at University of Copenhagen (UCPH) in Copenhagen, Denmark. Based at the university's Frederiksberg Campus in Frederiksberg and the Taastrup Campus in Taastrup on the outskirts of the city, the school originates in the Royal Veterinary and Agricultural University which was merged into UCPH in 2007. It is the only institution that trains veterinarian in Denmark. The programme is taught in two veterinary teaching hospitals, one at the Frederiksberg Campus and one