Catechol one of the main natural phenols in argan oil and is a component of castoreum, a substance from the castor gland of beavers, used in perfumery. It is also found in "Agaricus bisporus". Catechol moieties are also found widely within the natural world. Arthropod cuticle consists of chitin linked by a catechol moiety to protein. The cuticle may be strengthened by cross-linking (tanning and sclerotization), in particular, in insects, and of course by biomineralization. Catechols such as DHSA are produced through the metabolism of cholesterol by bacteria such as "Mycobacterium tuberculosis". Urushiols are naturally existing organic compounds that have the
Animal welfare and rights in South Korea by the Ordinance of the Ministry for Food, Agriculture, Forestry, and Fisheries, such as stunning or gas. The government is to formulate and implement a comprehensive animal welfare plan every five years, including matters related to animal farming. Regarding animal testing, alternatives to animals must be considered, animals less sensitive to pain should be used where possible, anesthetics are required, and lost or abandoned animals which have served humans (e.g. guide dogs) must not be used. The law stipulates that Animal Experimentation Ethics Committees be created in facilities where animals are experimented on. In addition to the Animal Protection Act,