Catalpic acid

Structural formula
	Catalpic acid
General
Surname	Catalpic acid
other names	(9 E , 11 E , 13 Z ) -9,11,13-octadecatrienoic acid;
Molecular formula	C 18 H 30 O 2
External identifiers / databases
PubChem	5385589
Wikidata	Q646902
properties
Molar mass	278.44 g mol −1
Physical state	firmly
Melting point	32 ° C
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Catalpic acid is an organic compound from the group of conjugated , polyunsaturated fatty acids . It is a trienoic acid in the group of trans fatty acids and belongs to the omega-5 fatty acids . The common name is derived from the plant genus of the trumpet trees ( catalpa ), from which the natural substance was isolated for the first time.

It is esterified as triacylglyceride in the seed oil of the trumpet tree family (Bignoniaceae), in the yellow trumpet tree ( Catalpa ovata ), in the magnificent trumpet tree ( Catalpa speciosa ), as well as in the common trumpet tree ( Catalpa bignonioides ) and the desert willow ( Chilopsis linearis ). It is also found in small amounts in pomegranate seed oil .

It is an isomer of (9 Z , 11 E , 13 E ) alpha- eleostearic acid and (9 Z , 11 Z , 13 Z ) beta-eleostearic acid, of (9 Z , 11 E , 13 Z ) punicic acid , as well as ximenic acid and of calendulic acid . They belong to the group of natural conjugated linolenic acids (CLN) because they are their positional isomers.

The 4-hydroxybenzoic acid ( p oxybenzoic acid) was also formerly called Catalpinsäure referred to because they are the leaves and fruit (pod) of the catalpa ( Catalpa occurs spp.).

Individual evidence

↑ ^a ^b Frank D. Gunstone, John L. Harwood, Fred B Padley: The Lipid Handbook. Second Edition, Chapmen & Hall, 1994, ISBN 0-412-43320-6 , p. 311.
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
^ Fereidoon Shahidi: Nutraceutical and Specialty Lipids and their Co-Products. CRC Press, 2006, ISBN 978-1-57444-499-5 , p. 219.
^ Gary Sassano et al. a .: Analysis of pomegranate seed oil for the presence of jacaric acid. In: J. Sci. Food Agric. Volume 89, Issue 6, 2009, pp. 1046-1052, doi : 10.1002 / jsfa.3552 .
↑ 9,11,13-Octadecatrienoic acid, (9E, 11E, 13Z) on PlantFA Database, accessed October 23, 2017.
↑ Walter Karrer : Constitution and occurrence of organic plant substances. Springer, 1958, ISBN 978-3-0348-6795-5 (reprint), p. 356.
↑ YPS Bajaj: Medicinal and Aromatic Plants VIII. Biotechnology in Agriculture and Forestry 33, Springer, 1995, ISBN 978-3-642-08201-6 , p. 142 f.

[Frank-1] Frank D. Gunstone, John L. Harwood, Fred B Padley: The Lipid Handbook. Second Edition, Chapmen & Hall, 1994, ISBN 0-412-43320-6 , p. 311.

[NV-2] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[3] Fereidoon Shahidi: Nutraceutical and Specialty Lipids and their Co-Products. CRC Press, 2006, ISBN 978-1-57444-499-5 , p. 219.

[4] Gary Sassano et al. a .: Analysis of pomegranate seed oil for the presence of jacaric acid. In: J. Sci. Food Agric. Volume 89, Issue 6, 2009, pp. 1046-1052, doi : 10.1002 / jsfa.3552 .

[5] 9,11,13-Octadecatrienoic acid, (9E, 11E, 13Z) on PlantFA Database, accessed October 23, 2017.

[6] Walter Karrer : Constitution and occurrence of organic plant substances. Springer, 1958, ISBN 978-3-0348-6795-5 (reprint), p. 356.

[7] YPS Bajaj: Medicinal and Aromatic Plants VIII. Biotechnology in Agriculture and Forestry 33, Springer, 1995, ISBN 978-3-642-08201-6 , p. 142 f.