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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

beta-Carotene Manufacturer/High quality/Best price/In stock

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Sinoway Industrial Co., Ltd.

Why is SINOWAY: 1) Specialized in pharmaceutical and healthcare industrial for 34 years. 2) ISO 9001:2015 & SGS audited supplier . 3) Accept various payment terms : T.T 30-60 days. 4) We have warehouse in USA with quickly shipment . 5) We c

Factory supply 1%;10%;20%;30%,50%,90%;99%up Beta Carotene powder

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $15.0 / 85.0

Type:Trading Company

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Kono Chem Co.,Ltd

Specifications CAS No.: 7235-40-7 Other Names: / MF: C40H56 EINECS No.: / Place of Origin:

beta-Carotene 98%

Cas:7235-40-7

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Xi'an Quanao Biotech Co., Ltd.

Come From Nature / Building Healthy Life Beauty In Your Face / Nourishment Your Taste Bud. Professional Factory: We has a complete production and operating system, with an annual output capacity of 2000 tons. It can produce variety of conten

Food grade Natural Beta-carotene powder price10%

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $24.6 / 99.0

Type:Manufacturers

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Chemwill Asia Co., Ltd.

CHemwill -- Beta-Carotene

Cas:7235-40-7

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Manufacturers

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Purestar Chem Enterprise Co.,Ltd

What is Beta-carotene Beta-carotene is a member of the carotenoids, which are highly pigmented (red, orange, yellow), fat-soluble compounds naturally present in many fruits, grains, oils, and vegetables (green plants, carrots, sweet potatoes, squ

Natural Beta Carotene 96%

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $8.0

Type:Trading Company

inquiry

DB BIOTECH CO., LTD

Q1: Are you a manufacturer?Answer: Yes, we are factory founded on 2002. Q2: How to contact with us?Click "contact supplier" And then send us message the product you interest in, you will get reply within 12 hours. Q3:Which kind of payment terms do yo

High quality β-Carotene powder with factory price

Cas:7235-40-7

Min.Order:0

Negotiable

Type:Trading Company

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Hangzhou Dingyan Chem Co., Ltd

Items Standard Result Appearance A brown-red or brownish-red,crystalline powder Qualified Purity

High purity beta-Carotene with high quality and best price cas:7235-40-7

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $95.0 / 120.0

Type:Manufacturers

inquiry

Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality Β-Carotene supplier in China

Cas:7235-40-7

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

inquiry

Jinan Finer Chemical Co., Ltd

Product description: Product name beta-Carotene CAS number 7235-40-7 Assay 1%,10%,20%,96% Appearance Orange-yellow or red powder Capacity 2000mt/year Application Food, cosmetic

beta-Carotene

Cas:7235-40-7

Min.Order:10 Gram

FOB Price: $12.0

Type:Lab/Research institutions

inquiry

Hebei yanxi chemical co.,LTD.

hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm

Best Price Factory Supply Brown Fine Powder Carrot Root Extract Carrot Juice Powder extract CAS NO.7235-40-7

Cas:7235-40-7

Min.Order:1 Metric Ton

FOB Price: $1.0 / 3.0

Type:Manufacturers

inquiry

Wuhan Fortuna Chemical Co.,Ltd

Unique advantages for beta-Carotene Cas 7235-40-7 Guaranteed the purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:Powder Storage:?20°C Package:1kg/foil bag, 25kg/drum or as you required

High quality beta-Carotene Cas 7235-40-7 supplied by reliable factory

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $350.0

Type:Trading Company

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EAST CHEMSOURCES LIMITED

Beta Carotene Oil ITEM STANDARD Appearance Red brown crystal liquid Maximum absorption 453-457nm Absorption at 340 nm =<0.08 Content =&

Beta Carotene Oil

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $2.0 / 3.0

Type:Manufacturers

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply β,β-carotene

Cas:7235-40-7

Min.Order:1

Negotiable

Type:Other

inquiry

Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

High Quality 99% beta-Carotene 7235-40-7 ISO Producer

Cas:7235-40-7

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

inquiry

Xi`an Eastling Biotech Co., Ltd.

beta-Carotene CAS: 7235-40-7;116-32-5 Molecular Formula: C40H56 Home Product Category Chemical Reagents Reagents for biochemistry and molecular biology 7235-40-7 7235-40-7 - Names and Identifiers Name beta-Carotene Sy

Eastling Supply Natural and Synthetic β-Carotene

Cas:7235-40-7

Min.Order:100 Gram

FOB Price: $21.9 / 183.0

Type:Trading Company

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COLORCOM LTD.

Colorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on

Carrot Extract 10%,20%,97% Beta Carotene

Cas:7235-40-7

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

inquiry

Hubei DiBo chemical co., LTD

Name:beta-Carotene CAS:7235-40-7 Grade:For chemical industry, scientific research and export Product Quality 12 years of chemical raw materials Mature operation of the industry System stability Data storage Security without vulnerability

Factory supply 1%;10%;20%;30%,50%,90%;99%up Beta Carotene powder

Cas:7235-40-7

Min.Order:25 Kilogram

FOB Price: $1.0 / 2.0

Type:Other

inquiry

Henan Tianfu Chemical Co., Ltd.

Product Name: beta-Carotene Synonyms: SOLATENE;PROVITAMIN A1;PROVITAMIN A;TRANS-B-CAROTENE;TRANS-BETA-CAROTENE;(all-E)-1,1'-(3,7,12,16-Tetramethyl-1,3,5,7,9,11,13,15,17-octadecanonaene-1,18-diyl)bis(2,6

beta-Carotene

Cas:7235-40-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Density: 1.000 Melting point: 178-179 ° C Boiling point: 644.94 ° C (rough estimate) Flash point: 103 ° C Solubility in Hexane, dimethyl sulfoxide, benzene, chloroform, cyclohexane Insoluble in water Steam pressure: 0.004Pa at 25 ℃ Solubi

β-Carotene 7235-40-7

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $15.0 / 50.0

Type:Trading Company

inquiry

Henan Sinotech Import&Export Corporation

Name: β-Carotene CAS:7235-40-7 MF: C40H56 Appearance:Red Powder Storage:Store in cool and dry place, away from sun light. Package:25kg Application:Medical Purpose; Food Additive;Cosmetics Transportation:By sea or by air Port:Qingdao Port

β-Carotene

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Best quality CAS 7235-40-7 with competitive price

Cas:7235-40-7

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

beta-Carotene/ LIDE PHARMA- Factory supply / Best price

Cas:7235-40-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Sartort Biopharma Co., Ltd

Appearance:Orange powder Storage:R.T Package:25kg/drum Application:Food colorant Transportation:Express/Sea/Air Port:Any port in China

beta-Carotene cas 7235-40-7 Professional supplier

Cas:7235-40-7

Min.Order:25 Kilogram

FOB Price: $28.5 / 40.0

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance: Red Brown Powder Storage:Store in sealed containers at coo

HANWAYS CHEMPHARM CO.,LIMITED

Hanways chempharm is a specialized company concentrating on the R&D, production, marketing and technical service of APIs and pharmaceutical intermediates. The marketing department is located in Wuhan. We have two GMP facilities in Hubei Pr

Food Pigment Yellow to Orange Color Natural Beta Carotene Beta-Carotene

Cas:7235-40-7

Min.Order:1 Kilogram

FOB Price: $200.0 / 400.0

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

beta-Carotene 7235-40-7

Cas:7235-40-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Xi'an Faithful Biotech Co., Ltd.

We are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present

Natural beta-Carotene powder Carrot Extract

Cas:7235-40-7

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

β-Carotene CAS:7235-40-7 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermedia

β-Carotene CAS:7235-40-7

Cas:7235-40-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

(1E)-1-(2,6,6-trimethylcyclohex-1-enyl)-3-methyl-1,4-pentadien-3-ol
59057-30-6

(1E)-1-(2,6,6-trimethylcyclohex-1-enyl)-3-methyl-1,4-pentadien-3-ol

triphenylphosphine
603-35-0

triphenylphosphine

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: (1E)-1-(2,6,6-trimethylcyclohex-1-enyl)-3-methyl-1,4-pentadien-3-ol; triphenylphosphine With hydrogenchloride In methanol; water at 45℃; for 1h;
Stage #2: (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial With 1,2-bis (3-methylimidazolium-1-yl) ethane dihydroxide; sodium carbonate In methanol; water at 20℃; for 3h; Reagent/catalyst; Temperature; Wittig Olefination; Inert atmosphere;
95%
Retinol acetate
127-47-9

Retinol acetate

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: Retinol acetate With sulfuric acid; triphenylphosphine In methanol at 0 - 5℃; for 10.5h;
Stage #2: With palladium diacetate; β‐cyclodextrin In ethanol; dichloromethane; water under 16501.7 Torr; for 8h; Reagent/catalyst; Solvent; Pressure; Temperature; Autoclave;
90.6%
Stage #1: Retinol acetate With aniline In ethanol
Stage #2: With hydrogenchloride; triphenylphosphine In ethanol; water at 10 - 25℃; for 26h; Reagent/catalyst; Solvent; Further stages;
58.75%
C35H48Si

C35H48Si

2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene
138846-06-7

2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: C35H48Si With tetrabutyl ammonium fluoride In tetrahydrofuran at 0℃; for 0.5h; Inert atmosphere;
Stage #2: 2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene With tris(dibenzylideneacetone)dipalladium(0) chloroform complex In tetrahydrofuran at 0 - 25℃; for 1.25h; Inert atmosphere;
90%
(2E,4E,6E,8E,10E,12E,14E)-2,15-diiodo-6,11-dimethylhexadeca-2,4,6,8,10,12,14-heptaene
1427286-50-7

(2E,4E,6E,8E,10E,12E,14E)-2,15-diiodo-6,11-dimethylhexadeca-2,4,6,8,10,12,14-heptaene

tributyl [(E)-2-(2,6,6-trimethylcyclohex-1-en-1-yl)ethenyl]stannane
1427286-52-9, 791131-03-8

tributyl [(E)-2-(2,6,6-trimethylcyclohex-1-en-1-yl)ethenyl]stannane

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: (2E,4E,6E,8E,10E,12E,14E)-2,15-diiodo-6,11-dimethylhexadeca-2,4,6,8,10,12,14-heptaene; tributyl [(E)-2-(2,6,6-trimethylcyclohex-1-en-1-yl)ethenyl]stannane With tetrakis(triphenylphosphine) palladium(0); copper(I) thiophene-2-carboxylate; Tetrabutylammoniumsalz der Diphenylphosphinsaeure In N,N-dimethyl-formamide at 25℃; Stille Cross Coupling; Inert atmosphere;
Stage #2: With 2,6-di-tert-butyl-4-methyl-phenol In diethyl ether; N,N-dimethyl-formamide; toluene at 25℃; Inert atmosphere;
86%
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
870636-68-3

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

A

beta-carotene
7235-40-7

beta-carotene

B

13-cis-β,β-carotene

13-cis-β,β-carotene

Conditions
ConditionsYield
With potassium methanolate In cyclohexane at 80℃; for 16h;A 84%
B n/a
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
870636-68-3

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

A

beta-carotene
7235-40-7

beta-carotene

B

(11Z)-β,β-carotene
18526-49-3

(11Z)-β,β-carotene

Conditions
ConditionsYield
With potassium methanolate In cyclohexane at 80℃; for 16h; Product distribution / selectivity;A 84%
B n/a
1,9,18-tris(benzenesulfonyl)-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexen-1-yl)-3,7,11,15-octadecatetraene-2,17-diol, bis(tetrahydropyranyl) ether

1,9,18-tris(benzenesulfonyl)-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexen-1-yl)-3,7,11,15-octadecatetraene-2,17-diol, bis(tetrahydropyranyl) ether

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With potassium methanolate In cyclohexane; benzene at 70 - 80℃; for 18h;81%
With potassium methanolate In cyclohexane; benzene at 70 - 80℃; for 18h; Product distribution / selectivity;81%
11,20-dibenzenesulfonyl-11,12,19,20-tetrahydro-β-carotene
251291-82-4

11,20-dibenzenesulfonyl-11,12,19,20-tetrahydro-β-carotene

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With sodium In ethanol for 10h; desulfonation; Heating;75%
With sodium In ethanol for 10h; Heating / reflux;75%
11,20-di(benzenesulfonyl)-11,12,19,20-tetrahydro-β-carotene

11,20-di(benzenesulfonyl)-11,12,19,20-tetrahydro-β-carotene

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With sodium In ethanol; toluene75%
2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene
138846-06-7

2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene

(1E,3E,5E,7E,9E)-1,10-bis(tri-n-butylstannyl)-3,8-dimethyldeca-1,3,5,7,9-pentaene

(1E,3E,5E,7E,9E)-1,10-bis(tri-n-butylstannyl)-3,8-dimethyldeca-1,3,5,7,9-pentaene

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With 2,6-di-tert-butyl-4-methyl-phenol; N-ethyl-N,N-diisopropylamine; bis(benzonitrile)palladium(II) dichloride In tetrahydrofuran; N,N-dimethyl-formamide at 20℃; for 16h; Stille cross-coupling;73%
(2E,4E,6E,8E,10E,12E,14E)-2,15-diiodo-6,11-dimethylhexadeca-2,4,6,8,10,12,14-heptaene
1427286-50-7

(2E,4E,6E,8E,10E,12E,14E)-2,15-diiodo-6,11-dimethylhexadeca-2,4,6,8,10,12,14-heptaene

(E)-4,4,5,5-tetramethyl-2-(2-(2,6,6-trimethylcyclohex-1-enyl)-vinyl)-1,3,2-dioxaborolane
256518-16-8

(E)-4,4,5,5-tetramethyl-2-(2-(2,6,6-trimethylcyclohex-1-enyl)-vinyl)-1,3,2-dioxaborolane

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: (2E,4E,6E,8E,10E,12E,14E)-2,15-diiodo-6,11-dimethylhexadeca-2,4,6,8,10,12,14-heptaene With tetrakis(triphenylphosphine) palladium(0); 2,6-di-tert-butyl-4-methyl-phenol In tetrahydrofuran; toluene at 25℃; for 0.0833333h; Suzuki Coupling; Inert atmosphere;
Stage #2: (E)-4,4,5,5-tetramethyl-2-(2-(2,6,6-trimethylcyclohex-1-enyl)-vinyl)-1,3,2-dioxaborolane With thallium(I) hydroxide In tetrahydrofuran; water; toluene at 25℃; for 4h; Suzuki Coupling; Inert atmosphere;
73%
1,9,18-tris(benzenesulfonyl)-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexen-1-yl)-3,7,11,15-octadecatetraene-2,17-diol, bis(methoxymethyl) ether

1,9,18-tris(benzenesulfonyl)-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexen-1-yl)-3,7,11,15-octadecatetraene-2,17-diol, bis(methoxymethyl) ether

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With potassium methanolate In cyclohexane; benzene at 70 - 80℃; for 18h;71%
With potassium methanolate In cyclohexane; benzene at 70 - 80℃; for 18h; Product distribution / selectivity;71%
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(1-ethoxyethyl) ether
870636-67-2

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(1-ethoxyethyl) ether

A

beta-carotene
7235-40-7

beta-carotene

B

13-cis-β,β-carotene

13-cis-β,β-carotene

Conditions
ConditionsYield
With potassium methanolate In cyclohexane at 80℃; for 16h;A 70%
B n/a
1,9,18-tris(benzenesulfonyl)-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexen-1-yl)-3,7,11,15-octadecatetraene-2,17-diol, bis(1-ethoxyethyl) ether

1,9,18-tris(benzenesulfonyl)-3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-1-cyclohexen-1-yl)-3,7,11,15-octadecatetraene-2,17-diol, bis(1-ethoxyethyl) ether

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With potassium methanolate In cyclohexane; benzene at 70 - 80℃; for 17h;70%
With potassium methanolate In cyclohexane; benzene at 70 - 80℃; for 17h; Product distribution / selectivity;70%
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(1-ethoxyethyl)ether

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(1-ethoxyethyl)ether

A

beta-carotene
7235-40-7

beta-carotene

B

(11Z)-β,β-carotene
18526-49-3

(11Z)-β,β-carotene

Conditions
ConditionsYield
With potassium methanolate In cyclohexane at 80℃; for 16h; Product distribution / selectivity;A 70%
B n/a
(E)-1-bromo-2-iodoethylene
56798-08-4

(E)-1-bromo-2-iodoethylene

trimethylaluminum
75-24-1

trimethylaluminum

1-((E,E,E)-3-methyl-1,3,5-octatrien-7-ynyl)-2,6,6-trimethyl-1-cyclohexene
111917-89-6

1-((E,E,E)-3-methyl-1,3,5-octatrien-7-ynyl)-2,6,6-trimethyl-1-cyclohexene

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: trimethylaluminum; 1-((E,E,E)-3-methyl-1,3,5-octatrien-7-ynyl)-2,6,6-trimethyl-1-cyclohexene With zirconocene dichloride In dichloromethane at 23℃; for 4h;
Stage #2: at 50℃;
Stage #3: (E)-1-bromo-2-iodoethylene With tris(dibenzylideneacetone)dipalladium (0); zinc(II) chloride In tetrahydrofuran; N,N-dimethyl-formamide at 23℃; for 8h; Further stages.;
68%
Stage #1: trimethylaluminum; 1-((E,E,E)-3-methyl-1,3,5-octatrien-7-ynyl)-2,6,6-trimethyl-1-cyclohexene; zirconocene dichloride In 1,2-dichloro-ethane at 20℃; for 20h;
Stage #2: (E)-1-bromo-2-iodoethylene With zinc(II) chloride; tris(dibenzylideneacetone)dipalladium (0) In tetrahydrofuran; N,N-dimethyl-formamide at 20℃; for 5h; Further stages.;
68%
C38H44ClP

C38H44ClP

(R)-9-cis-13,14-dihydro-retinal

(R)-9-cis-13,14-dihydro-retinal

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: C38H44ClP With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.5h;
Stage #2: (R)-9-cis-13,14-dihydro-retinal In tetrahydrofuran; hexane at -78 - 25℃; for 1.5h;
67%
Vitamin A triphenylphosphonium sulfate

Vitamin A triphenylphosphonium sulfate

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With dihydrogen peroxide; potassium carbonate In water at 15℃; for 1h;66.1%
With bis(acetylacetonate)oxovanadium; 18-crown-6 ether; oxygen; potassium carbonate In toluene at 40℃; for 6h; Catalytic behavior; Concentration; Reagent/catalyst; Molecular sieve; Green chemistry;
C23H34OSi2

C23H34OSi2

2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene
138846-06-7

2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: C23H34OSi2 With potassium trimethylsilonate In tetrahydrofuran; 1,4-dioxane at 25℃; for 0.25h; Inert atmosphere;
Stage #2: 2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene With bis(dibenzylideneacetone)-palladium(0) In 1,4-dioxane at 25℃; for 1.5h; Inert atmosphere;
Stage #3: C23H34OSi2 Further stages;
66%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

(2E,4E)-3-methyl-5-(2,6,6-trimethyl-1-cyclohexenyl)-2,4-pentadien-1-ol
3917-39-3

(2E,4E)-3-methyl-5-(2,6,6-trimethyl-1-cyclohexenyl)-2,4-pentadien-1-ol

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With tributylphosphine; phenyl isocyanate; tetrakis(triphenylphosphine) palladium(0) In acetonitrile for 5h; Heating;65%
RETINOL
68-26-8

RETINOL

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: RETINOL With pyridine In methanol
Stage #2: With hydrogen bromide; triphenylphosphine In methanol at 5 - 35℃; for 35h; Reagent/catalyst; Solvent; Further stages;
64.42%
Multi-step reaction with 2 steps
1.1: hydrogenchloride / methanol; 1,4-dioxane / 2 h / 25 °C
2.1: n-butyllithium / tetrahydrofuran; hexane / 0.5 h / -78 °C
2.2: 1.5 h / -78 - 25 °C
View Scheme
trans-crotonic acid butyl ester
591-63-9

trans-crotonic acid butyl ester

(1E,3E,5E,7E)-2-(3,7-dimethyldeca-1,3,5,7,9-pentaenyl)-1,3,3-trimethylcyclohex-1-ene

(1E,3E,5E,7E)-2-(3,7-dimethyldeca-1,3,5,7,9-pentaenyl)-1,3,3-trimethylcyclohex-1-ene

A

beta-carotene
7235-40-7

beta-carotene

B

butyl (2E,4E,6E,8E,10E)-5,9-dimethyl-11-(2,6,6-trimethylcyclohex-1-en-1-yl)undeca-2,4,6,8,10-pentaenoate

butyl (2E,4E,6E,8E,10E)-5,9-dimethyl-11-(2,6,6-trimethylcyclohex-1-en-1-yl)undeca-2,4,6,8,10-pentaenoate

C

butyl (2E,4E,6E)-5-methyl-7-(2,6,6-trimethylcyclohex-1-en-1-yl)hepta-2,4,6-trienoate

butyl (2E,4E,6E)-5-methyl-7-(2,6,6-trimethylcyclohex-1-en-1-yl)hepta-2,4,6-trienoate

Conditions
ConditionsYield
With Hoveyda-Grubbs catalyst second generation In toluene at 25℃; for 4.5h; Reagent/catalyst;A 16%
B 62%
C 1%
aqueous sodium chloride

aqueous sodium chloride

diethyl 3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienylphosphonate
186194-14-9

diethyl 3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienylphosphonate

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

A

beat-carotene

beat-carotene

B

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With potassium tert-butylate In tetrahydrofuranA 61%
B n/a
(1E,3E,5E,7E,9E)-1,10-di(benzyldimethylsilyl)-3,8-dimethyldeca-1,3,5,7,9-pentaene

(1E,3E,5E,7E,9E)-1,10-di(benzyldimethylsilyl)-3,8-dimethyldeca-1,3,5,7,9-pentaene

2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene
138846-06-7

2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: (1E,3E,5E,7E,9E)-1,10-di(benzyldimethylsilyl)-3,8-dimethyldeca-1,3,5,7,9-pentaene With tetrabutyl ammonium fluoride In tetrahydrofuran at 0℃; for 0.666667h; Inert atmosphere;
Stage #2: 2-[(1’E,3’E)-3’-methyl-4’-iodobuta-1’,3’-dien-1’yl]-1,3,3-trimethylcyclohex-1-ene With tris(dibenzylideneacetone)dipalladium(0) chloroform complex In tetrahydrofuran at 0 - 25℃; for 1.25h; Inert atmosphere;
61%
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
870636-64-9

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

A

beta-carotene
7235-40-7

beta-carotene

B

13-cis-β,β-carotene

13-cis-β,β-carotene

Conditions
ConditionsYield
With potassium tert-butylate In cyclohexane at 80℃; for 16h;A 60%
B n/a
(1E,3E,5E,7E)-2-(3,7-dimethyldeca-1,3,5,7,9-pentaenyl)-1,3,3-trimethylcyclohex-1-ene

(1E,3E,5E,7E)-2-(3,7-dimethyldeca-1,3,5,7,9-pentaenyl)-1,3,3-trimethylcyclohex-1-ene

methyl (2E,4E)-4-methylocta-2,4,6-trienoate

methyl (2E,4E)-4-methylocta-2,4,6-trienoate

A

beta-carotene
7235-40-7

beta-carotene

B

methyl (2E,4E,6E,8E,10E,12E,14E)-4,9,13-trimethyl-15-(2,6,6-trimethylcyclohex-1-en-1-yl)pentadeca-2,4,6,8,10,12,14-heptaenoate
69774-12-5

methyl (2E,4E,6E,8E,10E,12E,14E)-4,9,13-trimethyl-15-(2,6,6-trimethylcyclohex-1-en-1-yl)pentadeca-2,4,6,8,10,12,14-heptaenoate

Conditions
ConditionsYield
With Hoveyda-Grubbs catalyst second generation In toluene at 25℃; for 7h;A 58%
B 24%
(1E,3E,5E,7E)-2-(3,7-dimethyldeca-1,3,5,7,9-pentaenyl)-1,3,3-trimethylcyclohex-1-ene

(1E,3E,5E,7E)-2-(3,7-dimethyldeca-1,3,5,7,9-pentaenyl)-1,3,3-trimethylcyclohex-1-ene

A

(E)-2-(3-methylbuta-1,3-dienyl)-1,3,3-trimethyl-cyclohex-1-ene
22255-47-6

(E)-2-(3-methylbuta-1,3-dienyl)-1,3,3-trimethyl-cyclohex-1-ene

B

beta-carotene
7235-40-7

beta-carotene

C

(1E,3E)-3-methyl-1-[2,6,6-trimethylcyclohex-1-enyl]hexa-1,3,5-triene
43219-55-2

(1E,3E)-3-methyl-1-[2,6,6-trimethylcyclohex-1-enyl]hexa-1,3,5-triene

D

2-((1E,3E,5E)-3,7-dimethylocta-1,3,5,7-tetraen-1-yl)-1,3,3-trimethylcyclohex-1-ene
70244-78-9, 94440-28-5

2-((1E,3E,5E)-3,7-dimethylocta-1,3,5,7-tetraen-1-yl)-1,3,3-trimethylcyclohex-1-ene

Conditions
ConditionsYield
With tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidine][benzylidene]ruthenium(II) dichloride In dichloromethane at 50℃; for 6.5h; Inert atmosphere;A 0.1%
B 57%
C 3%
D 5%
C38H62P(1+)*Br(1-)

C38H62P(1+)*Br(1-)

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
With dihydrogen peroxide; potassium hydroxide In water at 15℃; for 2h;53.5%
beta-carotene
7235-40-7

beta-carotene

canthaxanthin
514-78-3

canthaxanthin

Conditions
ConditionsYield
With cerium(IV) oxide; sulfuric acid; potassium iodide In dichloromethane; water at 0℃; under 760.051 Torr; for 2.5h; Reagent/catalyst; Temperature; UV-irradiation;99.5%
With sulfuric acid; copper(II) sulfate; potassium iodide In dichloromethane; water at -5 - 45℃; under 760.051 Torr; for 4h; Temperature; Reagent/catalyst; Green chemistry;98.05%
With dihydrogen peroxide; potassium iodide; lithium hydroxide In dichloromethane; water at -5 - 45℃; under 760.051 Torr; for 5.5h; Catalytic behavior; Temperature; Reagent/catalyst; Green chemistry;98.05%
beta-carotene
7235-40-7

beta-carotene

all-trans-Retinal
116-31-4

all-trans-Retinal

Conditions
ConditionsYield
With oxygen In water under 760.051 Torr; for 8h; Solvent; Reagent/catalyst;89%
With osmium(VIII) oxide; diethyl ether; sodium sulfate Reagens 4: wss. H2O2;
With chloroform; dihydrogen peroxide; acetic acid
With manganese(IV) oxide
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