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
Cas:79-81-2
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryHANGZHOU THINK CHEMICAL CO., LTD. (THINKCHEM) is an integrative corporation of trade, research and contract manufacture. With about ten years of business experiences on the marketing & distribution, thinkchem specializes in exp
Cas:79-81-2
Min.Order:20 Kilogram
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Type:Other
inquiryUnique advantages for Vitamin A palmitate Cas 79-81-2 Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:Yellow or brown yellow oily liquid Storage:Store in 2-8℃ Package:2
Cas:79-81-2
Min.Order:1 Kilogram
FOB Price: $190.0 / 205.0
Type:Trading Company
inquiryCAS No.: 79-81-2 Other Names: Retinol palmitate MF: C36H60O2 EINECS No.: 201-228-5 Place of Origin: Henan, China (Mainland) Type: Vitamins, Amino Acids and C
Cas:79-81-2
Min.Order:1 Kilogram
FOB Price: $95.0 / 110.0
Type:Other
inquiryDayangChem 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
Cas:79-81-2
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryItems Standard Result Appearance Yellow or brown yellow oily liquid Complies Identification
Cas:79-81-2
Min.Order:1 Kilogram
FOB Price: $300.0 / 400.0
Type:Manufacturers
inquiryWelcome 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
Cas:79-81-2
Min.Order:0 Metric Ton
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Type:Manufacturers
inquiryhebei 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
Cas:79-81-2
Min.Order:1 Metric Ton
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inquiryWe can provide GMP validation service that complies with SFDA, FDA, WHO and EU EMPA.Excellent registration team could help us easlily to register our products in different countries.If you and your customer are interested in some products or need CMO
Cas:79-81-2
Min.Order:1 Gram
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Type:Manufacturers
inquiry1, Full experience of large numbers containers loading in main Chinese seaports 2, Packing with pallet as buyer's special request 3, Best service after shipment with e-mail 4, Cargoes together with container sales service available
Cas:79-81-2
Min.Order:25 Kilogram
Negotiable
Type:Trading Company
inquiryThe 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
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Cas:79-81-2
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryRetinol palmitate Basic information Product Name: Retinol palmitate Synonyms: AROVIT;ALL TRANS-RETINOL PALMITATE;RETINOL PALMITATE;RETINOL PALMITATE ALL TRANS;RETINOL PALMITATE ALL TRANS
Cas:79-81-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryOur Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con
Cas:79-81-2
Min.Order:1 Kilogram
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inquiryWITH 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
Cas:79-81-2
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Type:Trading Company
inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W
Cas:79-81-2
Min.Order:1 Kilogram
FOB Price: $7.0 / 9.0
Type:Trading Company
inquiryOur Advantage: High quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
Cas:79-81-2
Min.Order:1 Kilogram
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Type:Trading Company
inquiryAdvantage : 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&
Cas:79-81-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryProdcut name Vitamin A Palmitate CAS No. 79-81-2 Appearance Light yellow liquid Molecular Formula C36H60O2 Molecular Weight 524.87 Appearance:light yellow liquid Storage:Preserve in we
Advantages: Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best s
Appearance:Light Yellow to Yellow Oil Storage:Room temperature Package:25kg/Barrel Application:Used as medicines, food additives and feed additives, etc. Transportation:Express/Sea/Air Port:Any port in china
Cas:79-81-2
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiry1.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
Cas:79-81-2
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryWe 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
Cas:79-81-2
Min.Order:10 Gram
FOB Price: $0.6
Type:Trading Company
inquiryWuhan hanweishi Pharmchem Co., Ltd(Hanways chempharm) is a specialized company concentrating on the R&D, production, marketing and technical service of APIs and pharmaceutical intermediates. The leading products range are APIs, Hormones, Peptides
Cas:79-81-2
Min.Order:100 Kilogram
FOB Price: $1.0 / 5.0
Type:Trading Company
inquiryPacking: According to customer requirements Delivery time: In stock or depands Port of shipment: Ningbo/Shanghai/Qingdao OEM/ODM:Welcome Sample:We can offer our existing samples at once Appearance:oil or powder Storage:Refer to COA / MSDS Packa
Cas:79-81-2
Min.Order:1 Kilogram
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Type:Trading Company
inquiryGMP/DMF/COS/CEP/FDA/FAMI-QS/HALAL Appearance:yellow or brown yellow oily liquid Storage:2-8°C Package:as client requirement Application:antihypertensive Transportation:Express, Air ,Sea Port:Any port of China
Cas:79-81-2
Min.Order:0 Metric Ton
Negotiable
Type:Manufacturers
inquiryOur 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 presen
Cas:79-81-2
Min.Order:25 Milliliter
FOB Price: $45.0 / 50.0
Type:Trading Company
inquiryVitamin A palmitate CAS: 79-81-2 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 interme
Cas:79-81-2
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
Cas:79-81-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryConditions | Yield |
---|---|
In toluene at 35℃; for 1h; | 99% |
With pyridine In 1,2-dichloro-ethane |
Conditions | Yield |
---|---|
With aluminum oxide In Petroleum ether at 40℃; for 2h; Solvent; | 97.62% |
Conditions | Yield |
---|---|
With sodium hydroxide In methanol at 55℃; under 11.2511 - 16.5017 Torr; for 3h; Concentration; Pressure; Large scale; | 96% |
Conditions | Yield |
---|---|
at 60℃; under 0.750075 Torr; for 3h; Temperature; Large scale; | 94% |
5-(2,6,6-trimethylcyclohexenyl)-3-methyl-2,4-pentadienyltriphenylphosphonium bromide
retinyl palmitate
Conditions | Yield |
---|---|
With sodium ethanolate In N,N-dimethyl-formamide at -5 - 5℃; for 3h; Wittig Olefination; Inert atmosphere; | 91.3% |
[(2E,4E)-3-methyl-5-(2,6,6-trimethylcyclohex-1-en-1-yl)penta-2,4-dienyl]triphenylphosphonium chloride
retinyl palmitate
Conditions | Yield |
---|---|
With potassium hydroxide In isopropyl alcohol at 5 - 20℃; for 2h; Wittig Olefination; Inert atmosphere; | 90.8% |
diethyl 3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienylphosphonate
retinyl palmitate
Conditions | Yield |
---|---|
Stage #1: diethyl 3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienylphosphonate With sodium t-butanolate In toluene at 0℃; for 0.5h; Inert atmosphere; Stage #2: 2-methyl-4-palmitoyloxy-2-butenal In toluene for 3h; Reagent/catalyst; Solvent; Inert atmosphere; | 89% |
Retinol acetate
1-hexadecylcarboxylic acid
A
retinyl palmitate
B
RETINOL
Conditions | Yield |
---|---|
With Novozyme 435 (from Candida antarctica immobilized on acrylic resin); Amberlyst A-21 In toluene at 20℃; for 15h; Product distribution / selectivity; Enzymatic reaction; | A 78% B n/a |
Conditions | Yield |
---|---|
With 1,2-dichloro-ethane |
pyridine
toluene
trichlorophosphate
retinyl palmitate
Conditions | Yield |
---|---|
at 90 - 95℃; |
3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-1,4-pentadienylphosphonic acid,diethyl ester
retinyl palmitate
Conditions | Yield |
---|---|
With sodium t-butanolate In water; N,N-dimethyl-formamide; toluene |
Conditions | Yield |
---|---|
With Candida sp.99-125 lipase immobilized on SBA-15 In hexane at 30℃; for 6h; Enzymatic reaction; | 75.2 %Chromat. |
With novozyme 435 In toluene at 20℃; for 20h; Schlenk technique; Inert atmosphere; Enzymatic reaction; |
farnesyl alcohol
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: TEMPOL; copper(l) chloride / N,N-dimethyl-formamide / 2 h / 30 °C 2.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone / toluene / 0.5 h / 50 °C 3.1: sulfuric acid / 1,2-dichloro-ethane / 0 - 5 °C 4.1: triphenylphosphine / methanol / 1 h / 45 °C 4.2: 1 h / 45 °C 5.1: toluene / 1 h / 35 °C View Scheme |
(2E)-farnesal
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone / toluene / 0.5 h / 50 °C 2.1: sulfuric acid / 1,2-dichloro-ethane / 0 - 5 °C 3.1: triphenylphosphine / methanol / 1 h / 45 °C 3.2: 1 h / 45 °C 4.1: toluene / 1 h / 35 °C View Scheme |
(2E,4E,6Z)-3,7,11-Trimethyl-dodeca-2,4,6,10-tetraenal
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: sulfuric acid / 1,2-dichloro-ethane / 0 - 5 °C 2.1: triphenylphosphine / methanol / 1 h / 45 °C 2.2: 1 h / 45 °C 3.1: toluene / 1 h / 35 °C View Scheme |
(2E,4E)-3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: triphenylphosphine / methanol / 1 h / 45 °C 1.2: 1 h / 45 °C 2.1: toluene / 1 h / 35 °C View Scheme |
2-(bromomethyl)-1,3,3-trimethylcyclohex-1-ene
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: hexane / 4 h / 50 - 55 °C / Inert atmosphere 2.1: potassium hydroxide / isopropyl alcohol / 1 h / -5 - 5 °C / Inert atmosphere 3.1: potassium hydroxide / water; dichloromethane / 3 h / 10 - 15 °C 3.2: 3 h / 20 - 25 °C 4.1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 5.1: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 5 steps 1.1: hexane / 4 h / 50 - 55 °C / Inert atmosphere 2.1: potassium hydroxide / isopropyl alcohol / 1 h / -5 - 5 °C / Inert atmosphere 3.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 3.2: 3 h / 20 - 25 °C 4.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 5.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme |
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: sodium ethanolate / N,N-dimethyl-formamide / 5 h / -5 - 10 °C / Inert atmosphere 2.1: potassium hydroxide / water; dichloromethane / 3 h / 10 - 15 °C 2.2: 3 h / 20 - 25 °C 3.1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 4.1: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 4 steps 1.1: sodium ethanolate / N,N-dimethyl-formamide / 5 h / -5 - 10 °C / Inert atmosphere 2.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 2.2: 3 h / 20 - 25 °C 3.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 4.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme |
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: sodium methylate / N,N-dimethyl-formamide / 1 h / 0 - 15 °C / Inert atmosphere 2.1: potassium hydroxide / water; dichloromethane / 3 h / 10 - 15 °C 2.2: 3 h / 20 - 25 °C 3.1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 4.1: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 4 steps 1.1: sodium methylate / N,N-dimethyl-formamide / 1 h / 0 - 15 °C / Inert atmosphere 2.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 2.2: 3 h / 20 - 25 °C 3.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 4.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme |
triphenyl((2,6,6-trimethylcyclohex-1-enyl)methyl)phosphonium bromide
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: potassium hydroxide / isopropyl alcohol / 1 h / -5 - 5 °C / Inert atmosphere 2.1: potassium hydroxide / water; dichloromethane / 3 h / 10 - 15 °C 2.2: 3 h / 20 - 25 °C 3.1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 4.1: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 4 steps 1.1: potassium hydroxide / isopropyl alcohol / 1 h / -5 - 5 °C / Inert atmosphere 2.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 2.2: 3 h / 20 - 25 °C 3.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 4.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme |
3-methyl-5-acetoxy-1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-1,3-pentadiene
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: potassium hydroxide / water; dichloromethane / 3 h / 10 - 15 °C 1.2: 3 h / 20 - 25 °C 2.1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 3.1: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 3 steps 1.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 1.2: 3 h / 20 - 25 °C 2.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 3.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme |
5-(2,6,6-trimethyl-cyclohex-1-enyl)-3-methyl-1-chloro-penta-2,4-diene
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 2: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme |
3-methyl-5-bromo-1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-1,3-pentadiene
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 2: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1.1: hydrogen bromide; sodium hydroxide / water; dichloromethane / 2 h / 30 - 35 °C / Inert atmosphere 1.2: 2 h / 35 - 40 °C 2.1: hexane / 4 h / 50 - 55 °C / Inert atmosphere 3.1: potassium hydroxide / isopropyl alcohol / 1 h / -5 - 5 °C / Inert atmosphere 4.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 4.2: 3 h / 20 - 25 °C 5.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 6.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 6 steps 1.1: hydrogen bromide; sodium hydroxide / water; dichloromethane / 2 h / 30 - 35 °C / Inert atmosphere 1.2: 2 h / 35 - 40 °C 2.1: hexane / 4 h / 50 - 55 °C / Inert atmosphere 3.1: potassium hydroxide / isopropyl alcohol / 1 h / -5 - 5 °C / Inert atmosphere 4.1: potassium hydroxide / water; dichloromethane / 3 h / 10 - 15 °C 4.2: 3 h / 20 - 25 °C 5.1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 6.1: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 6 steps 1.1: sodium hydroxide; thionyl chloride / 1,2-dichloro-ethane; water / 3 h / 40 - 45 °C 1.2: 5 h / 70 - 75 °C 2.1: acetonitrile / 4 h / 60 - 65 °C / Inert atmosphere 3.1: sodium ethanolate / N,N-dimethyl-formamide / 5 h / -5 - 10 °C / Inert atmosphere 4.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 4.2: 3 h / 20 - 25 °C 5.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 6.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme |
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: acetonitrile / 4 h / 60 - 65 °C / Inert atmosphere 2.1: sodium ethanolate / N,N-dimethyl-formamide / 5 h / -5 - 10 °C / Inert atmosphere 3.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 3.2: 3 h / 20 - 25 °C 4.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 5.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 5 steps 1.1: acetonitrile / 4 h / 60 - 65 °C / Inert atmosphere 2.1: sodium ethanolate / N,N-dimethyl-formamide / 5 h / -5 - 10 °C / Inert atmosphere 3.1: potassium hydroxide / water; dichloromethane / 3 h / 10 - 15 °C 3.2: 3 h / 20 - 25 °C 4.1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 5.1: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 5 steps 1.1: 4 h / 105 - 110 °C / Inert atmosphere 2.1: sodium methylate / N,N-dimethyl-formamide / 1 h / 0 - 15 °C / Inert atmosphere 3.1: potassium hydroxide / water; dichloromethane / 3 h / 10 - 15 °C 3.2: 3 h / 20 - 25 °C 4.1: isopropyl alcohol / 5 h / 55 - 60 °C / Inert atmosphere 5.1: potassium hydroxide / isopropyl alcohol / 2 h / 5 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 5 steps 1.1: 4 h / 105 - 110 °C / Inert atmosphere 2.1: sodium methylate / N,N-dimethyl-formamide / 1 h / 0 - 15 °C / Inert atmosphere 3.1: sodium hydroxide / water; dichloromethane / 3 h / 15 - 20 °C 3.2: 3 h / 20 - 25 °C 4.1: acetonitrile / 5 h / 50 - 55 °C / Inert atmosphere 5.1: sodium ethanolate / N,N-dimethyl-formamide / 3 h / -5 - 5 °C / Inert atmosphere View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: magnesium chloride; di-tert-butyl dicarbonate / ethyl acetate / 5 h / 25 - 35 °C 2.1: selenium(IV) oxide; tert.-butylhydroperoxide / 18 h / 25 - 30 °C / Inert atmosphere 3.1: sodium t-butanolate / toluene / 0.5 h / 0 °C / Inert atmosphere 3.2: 3 h / Inert atmosphere View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: magnesium chloride; di-tert-butyl dicarbonate / ethyl acetate / 5 h / 25 - 35 °C 2.1: selenium(IV) oxide; tert.-butylhydroperoxide / 18 h / 25 - 30 °C / Inert atmosphere 3.1: sodium t-butanolate / toluene / 0.5 h / 0 °C / Inert atmosphere 3.2: 3 h / Inert atmosphere View Scheme |
retinyl palmitate
Conditions | Yield |
---|---|
With potassium hydroxide In ethanol; isopropyl alcohol at 90℃; for 1.25h; | 90% |
retinyl palmitate
Conditions | Yield |
---|---|
at 80℃; for 120h; Kinetics; Further Variations:; Solvents; Temperatures; Dimerization; |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: aq. 5percent KOH / ethanol / 0.5 h / Heating View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating View Scheme |
retinyl palmitate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C View Scheme |
retinyl palmitate
20,14-retro-Retinoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min View Scheme | |
Multi-step reaction with 4 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) n-BuLi, diisopropylamine / 1.) THF, hexane, 0 deg C, 10 min, 2.) THF, hexane, -60 deg C, 5 min View Scheme |
retinyl palmitate
14-ethyl-20,14-retro-retinoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min View Scheme |
retinyl palmitate
14-isopropyl-20,14-retro-retinoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min View Scheme |
retinyl palmitate
methyl 14-ethyl-20,14-retro-retinoate
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min 5: 77 percent / diethyl ether / 20 h / 0 °C View Scheme |
retinyl palmitate
methyl 14-isopropyl-20,14-retro-retinoate
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min 5: 89 percent / diethyl ether / 0.5 h / 0 °C View Scheme |
retinyl palmitate
13-cis-14-Ethylretinoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min 5: 77 percent / diethyl ether / 20 h / 0 °C 6: 1.) MeONa, 2.) 10percent aq. KOH / 1.) MeOH, reflux, 7 h, 2.) EtOH, reflux View Scheme |
retinyl palmitate
14-Ethylretinoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min 5: 77 percent / diethyl ether / 20 h / 0 °C 6: 1.) MeONa, 2.) 10percent aq. KOH / 1.) MeOH, reflux, 7 h, 2.) EtOH, reflux View Scheme |
retinyl palmitate
13-cis-14-Isopropylretinoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min 5: 89 percent / diethyl ether / 0.5 h / 0 °C 6: 1.) NaH, 2.) 20percent aq. KOH, 18-crown-6 / 1.) DMF, 50 deg C, 90 min, 2.) EtOH, reflux View Scheme |
retinyl palmitate
14-Isopropylretinoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min 5: 89 percent / diethyl ether / 0.5 h / 0 °C 6: 1.) NaH, 2.) 20percent aq. KOH, 18-crown-6 / 1.) DMF, 50 deg C, 90 min, 2.) EtOH, reflux View Scheme |
retinyl palmitate
(2Z,4E,6E,8E)-2-Ethyl-3,7-dimethyl-9-(2,6,6-trimethyl-cyclohex-1-enyl)-nona-2,4,6,8-tetraenoic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 90 percent / aq. 10percent KOH / propan-2-ol; ethanol / 1.25 h / 90 °C 2: 58 percent / MnO2, NaCN / acetonitrile; acetic acid / 62 h / 20 °C 3: 77 percent / aq. 5percent KOH / ethanol / 0.5 h / Heating 4: 1.) lithium diisopropylamide, HMPA / 1.) THF, hexane, -60 deg C, 5 min, 2.) THF, hexane, -70 deg C, 45 min 5: 77 percent / diethyl ether / 20 h / 0 °C 6: MeONa / methanol / 7 h / Heating View Scheme |
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