Neocembrene
Title: Neocembrene
CAS Registry Number: 31570-39-5
CAS Name: (1E,5E,9E,12R)-1,5,9-Trimethyl-12-(1-methylethenyl)-1,5,9-cyclotetradecatriene
Additional Names: cembrene A; neocembrene A
Molecular Formula: C20H32
Molecular Weight: 272.47
Percent Composition: C 88.16%, H 11.84%
Literature References: Termite trail pheromone with all-trans configuration isolated from Nasutitermes exitiosus (Hill): B. P. Moore, Nature 211, 746 (1966). Structure: A. J. Birch et al., J. Chem. Soc. Perkin Trans. 1 1972, 2653; V. D. Patil et al., Tetrahedron 29, 341 (1973). Synthesis: M. Kodama et al., Tetrahedron Lett. 1975, 3065; Y. Kitahara et al., Chem. Lett. 1976, 219; H. Takayanagi et al., Chem. Commun. 1978, 359. Synthesis of neocembrene and isomers: T. Kato et al., J. Org. Chem. 45, 1126 (1980).
Properties: Colorless oil, faint wax-like odor. bp0.8 150-152°. nD30 1.5102.
Boiling point: bp0.8 150-152°
Index of refraction: nD30 1.5102

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