18526-49-3

Basic information

• Product Name: (11Z)-β,β-carotene
• Synonyms: (11Z)-β,β-carotene
• CAS NO: 18526-49-3
• Molecular Weight: 536.885
• Mol File: 18526-49-3.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: (11Z)-β,β-carotene(CAS DataBase Reference)
• NIST Chemistry Reference: (11Z)-β,β-carotene(18526-49-3)
• EPA Substance Registry System: (11Z)-β,β-carotene(18526-49-3)

Safety Data

• Hazardous Substances Data: 18526-49-3(Hazardous Substances Data)

Upstream product

• 13312-52-2 9-cis-β-carotene 
• 870636-64-9 5,14-bis(benzenesulfonyl)-6,13-dibromo-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexenyl)octadeca-1,3,9,15,17-pentaene 
• 870636-68-3 5,14-bis(benzenesulfonyl)-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexenyl)octadeca-1,3,9,15,17-pentaene-6,13-diol bis(methoxymethyl) ether 
• 870636-66-1 all-(E)-5,14-bis(benzenesulfonyl)-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexenyl)octadeca-1,3,9,15,17-pentene-6,13-diol bis(tetrahydropyranyl)ether 
• 31414-91-2 [(2E,6E,8E)-3,7-Dimethyl-9-(2,6,6-trimethyl-cyclohex-1-enyl)-nona-2,6,8-trien-4-ynyl]-triphenyl-phosphonium; bromide 
• 25428-61-9 11,12-didehydroretinal 
• 29443-88-7 (2E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethyl-cyclohex-1-enyl)-nona-2,6,8-trien-4-yn-1-ol 
• 201658-43-7 (11Z,11'Z)-β,β-carotene 
• 4517-40-2 11,12,11',12'-tetradehydro-β,β-carotene 
• 21499-97-8 11-Dehydro-β-carotin 
• 7235-40-7 beta-carotene 
• 83601-92-7 7-cis-β-carotene 

Downstream Products

• 7235-40-7 beta-carotene 

Relevant articles and documents

C10 Dialdehyde, Synthetic Method Thereof, and Synthetic Method of Beta-Carotene Using the Same

The novel intermediate compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the practical synthetic process for preparing β-carotene by the use of the above novel compound are disclosed. The synthesis of β-carotene is characterized by the double elimination reactions of the C40 compound containing both the benzenesulfonyl group and the group X (either halogen or ether), which can be prepared by the coupling reaction of the novel C10 dialdehyde with two equivalents of the C15 allylic sulfone, followed by the functional group transformation of the resulting C40 diol either to the corresponding halide or to the ether, to produce the fully conjugated polyene chain.

Kinetic Model for Studying the Isomerization of α- and β-Carotene during Heating and Illumination

The thermoisomerization and iodine-catalyzed photoisomerization of all-trans-α- and all-trans-β-carotene were kinetically studied using regression models. Carotene samples were heated at varied temperatures or exposed to a 20 W light for varied lengths of time. Isomerization and degradation reactions were monitored using HPLC with diode array detection. Four cis isomers of β-carotene and three cis isomers of α-carotene were separated and detected. The degradations of both carotenes under heating at 150 deg C or iodine/light treatment may fit the reversible first- order model. 9-cis and 13-cis were the major β-carotene isomers formed during heating, while 13,15-di-cis was favored during iodine-catalyzed photoisomerization. The formation of 9-cis and 13-cis form all-trans-α-carotene was dependent upon the extent of heat or iodine/light treatment, and the latter was formed in greater amount under either treatment. Keywords: α-Carotene; β-carotene; thermoisomerization; photoisomerization; kinetic study