103476-47-7

Basic information

• Product Name: 2,4,6,8-Nonatetraenal, 2,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (E,E,Z,E)-
• CAS NO: 103476-47-7
• Molecular Formula: C20H28O
• Molecular Weight: 284.442
• Mol File: 103476-47-7.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 2,4,6,8-Nonatetraenal, 2,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (E,E,Z,E)-(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4,6,8-Nonatetraenal, 2,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (E,E,Z,E)-(103476-47-7)
• EPA Substance Registry System: 2,4,6,8-Nonatetraenal, 2,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (E,E,Z,E)-(103476-47-7)

Safety Data

• Hazardous Substances Data: 103476-47-7(Hazardous Substances Data)

Upstream product

• 53121-26-9 all-trans-13-demethyl-14-methylretinal 
• 26586-02-7 (E)-4-acetoxy-2-methylcrotonaldehyde 
• 65527-83-5 (E)-4-Acetoxy-2-methyl-2-butenal-1-diethylacetal 
• 26586-01-6 (E)-4,4-diethoxy-3-methyl-but-2-en-1-ol 
• 59057-30-6 (1E)-1-(2,6,6-trimethylcyclohex-1-enyl)-3-methyl-1,4-pentadien-3-ol 
• 62285-98-7 5-(2,6,6-trimethylcyclohexenyl)-3-methyl-2,4-pentadienyltriphenylphosphonium bromide 
• 17974-55-9 (2E,4E)-ethyl 3-methyl-5-(2,6,6-trimethylcyclohex-1-enyl)penta-2,4-dienoate 
• 3917-39-3 (2E,4E)-3-methyl-5-(2,6,6-trimethyl-1-cyclohexenyl)-2,4-pentadien-1-ol 
• 161431-74-9 Ethyl <(E)-4-(diethoxyphosphonyl)-2-methylbut-2-enoate> 
• 3917-41-7 (2E,4E)-3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal 
• 53282-28-3 [(2E,4E)-3-methyl-5-(2,6,6-trimethylcyclohex-1-en-1-yl)penta-2,4-dienyl]triphenylphosphonium chloride 
• 94884-86-3 E-β-Formylcrotonaldehyde diethyl acetal 

Relevant articles and documents

Effects of the terminal-methyl position and of the length of the conjugated chain on the cis isomers produced by photo-isomerization: Analysis by HPLC and configurational determination by 1H-NMR spectroscopy of isomeric analogues of retinal and β-apo-12′-carotenal

An analogue of retinal (β-apo-12′-carotenal), its terminal-methyl group being shifted from the 13 to 14 (from 13′ to 14′) position, was subjected to direct (iodine-sensitized) photo-isomerization. The configurations of five (seven) isomers of the retinal (β-apo-12β-carotenal) analogue were determined by 1H-NMR spectroscopy to be all-trans, 7-, 9- and 11-mono-cis and 9,11-di-cis (all-trans, 9-, 13- and 13′-mono-cis and 9,13-, 9,13′- and 13,13′-di-cis). Comparative direct photo-isomerization in acetonitrile of the above parent and analogue aldehydes showed that the kinds and the amounts of cis isomer produced in the stationary-state mixtures are drastically affected by the terminal-methyl position and by the length of the conjugated chain. The results are discussed in terms of enhanced polarization upon excitation in the terminal C=O and the neighbouring C=C bonds in the conjugated chain.

Retinoids and Carotenoids, V.- Synthesis of Modified Retinals

The syntheses of 13-demethyl-13-ethyl-, 13-demethyl-13-propyl-, 13-demethyl-, 13-demethyl-14-methyl-, and 14-methylretinal are described.The UV spectra of some geometric isomers of these compounds are discussed.