Constituent of vegetable waxes. Isoln from the wax found on green blades of wheat: Pollard et al., Biochem. J. 27, 1889 (1933); from carnauba wax: Koonce, Brown, Oil Soap (Chicago) 21, 231 (1944). Synthesis starting with behenic acid: Bleyberg, Ulrich, Ber. 64, 2504 (1931); Francis et al., Proc. R. Soc. London A 158, 691 (1937).