References in periodicals archive ?
Ecdysteroids (Ecs) are produced by insects and plants (Butenandt and Karlson, 1954; Dinan et al., 2001; Nowickyj et al., 2008) and the best known and investigated Ecs is 20-hydroxy-Ecdysone ([beta]-Ecdysone = Ecd).
The chemical structures of rotenone and its derivatives (collectively called rotenoids) were independently determined by Butenandt and McCartney (1932), Laforge and Haller (1932), and Takei et al (1932).
For example, many vertebrates detect pheromones through their vomeronasal systems (Halpern and Martinez-Marcos, 2003), whereas insects have sensilla on their antennae dedicated to sensing pheromones (Hecker and Butenandt, 1984).
Butenandt had isolated estrone, a female sex hormone (see 1929).
In 1931 Butenandt obtained a small quantity of a hormone that was named androsterone (from the Greek word for "man").