High purity, content greater than 98% Pharmaceutical level quality control Factory direct Ready delivery from stock Application:Pharmaceutical intermediates
Cas:5763-49-5
Min.Order:1 Metric Ton
Negotiable
Type:Trading Company
inquiryDayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities
Cas:5763-49-5
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
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Cas:5763-49-5
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryHenan Tianfu Chemical Co., Ltd. is located in Zhengzhou High-tech Development Zone with import and export license. We passed ISO 9001:2008 in 2009, and won "High-tech Enterprise" by provincial government in 2013.The objective of the com
Cas:5763-49-5
Min.Order:1 Gram
FOB Price: $1000.0
Type:Lab/Research institutions
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:5763-49-5
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
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 email in t
Cas:5763-49-5
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryProduct Description Product Name 1,2-Cyclopentanedicarboxylic anhydride CAS No. 5763-49-5 Appearance Yellowish liquid
Cas:5763-49-5
Min.Order:1 Gram
FOB Price: $5.0
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:5763-49-5
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquirytetrahydro-1H-cyclopenta[c]furan-1,3(3aH)-dione CAS:5763-49-5 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
Cas:5763-49-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHenan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
Cas:5763-49-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryTriumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Service 1.Own made fine chemical products 2.Out sourcing and qua
Cas:5763-49-5
Min.Order:100 Gram
Negotiable
Type:Lab/Research institutions
inquiryOur Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter
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Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryHangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
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Min.Order:0 Metric Ton
Negotiable
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inquiryA substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
Cas:5763-49-5
Min.Order:4 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryZibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
Cas:5763-49-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryfactory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B
Cas:5763-49-5
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
inquiryWe Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O
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Min.Order:0
Negotiable
Type:Trading Company
inquiryShandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W
Cas:5763-49-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiry1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer
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Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
Cas:5763-49-5
Min.Order:0
Negotiable
Type:Manufacturers
inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
Cas:5763-49-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWe are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp
Cas:5763-49-5
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
inquiry1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification
Cas:5763-49-5
Min.Order:0
Negotiable
Type:Trading Company
inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
Cas:5763-49-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
Cas:5763-49-5
Min.Order:0
Negotiable
Type:Other
inquiryJinhua huayi chemical co., ltd. is dedicated to the development, production and marketing of chemicals. On the basis of equality and mutual benefit, and under the principle of customer first, credit first, quality first, we are ready to join hands
Cas:5763-49-5
Min.Order:100 Gram
Negotiable
Type:Lab/Research institutions
inquirySuperior quality, moderate price & quick delivery. Appearance:white crystalline powder Storage:Sealed in a cool ,dry and microtherm place , avoid light . Package:100g/bottle,1kg/bottle,25kg/drum or as per your request Application:It is an impo
Cas:5763-49-5
Min.Order:100 Gram
Negotiable
Type:Trading Company
inquiryAcmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
Cas:5763-49-5
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
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Min.Order:0
Negotiable
Type:Manufacturers
inquirycis-1,2-cyclopentanedicarboxylic acid
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
Conditions | Yield |
---|---|
at 150 - 160℃; anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); | |
Multi-step reaction with 2 steps 1: concentrated hydrochloric acid / 180 °C 2: acetyl chloride / 140 °C / im Einschlussrohr View Scheme | |
With acetic anhydride for 20h; Heating / reflux; |
trans-1,2-cyclopentanedicarboxylic acid
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
Conditions | Yield |
---|---|
at 300℃; anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); | |
With acetic anhydride anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); | |
With acetyl chloride at 140℃; im Einschlussrohr; anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); | |
With acetic anhydride anschliessend Erhitzen auf 170grad bei 20 mmHg Druck; anhydride of/the/ trans-cyclopentane-dicarboxylic acid-(1.2); | |
Multi-step reaction with 2 steps 1: acetic acid anhydride / Loesen in Wasser oder in Kalilauge und Ansaeuern 2: 150 - 160 °C View Scheme |
1,1,2,2-Cyclopentantetracarbonsaeure-tetraethylester
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: glacial acetic acid; concentrated sulfuric acid; water 2: acetic acid anhydride / Loesen in Wasser oder in Kalilauge und Ansaeuern 3: 150 - 160 °C View Scheme | |
Multi-step reaction with 2 steps 1: glacial acetic acid; concentrated sulfuric acid; water 2: acetic acid anhydride View Scheme |
(trans)-1,2-cyclopentanedicarboxylic acid
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
Conditions | Yield |
---|---|
In benzene | 8.60 g (81%) |
Conditions | Yield |
---|---|
at 50 - 55℃; for 5h; | 98% |
at 50 - 55℃; for 16h; |
Conditions | Yield |
---|---|
Stage #1: carbon tetrabromide With triphenylphosphine In tetrahydrofuran at 0℃; Inert atmosphere; Stage #2: With triethylamine In tetrahydrofuran for 0.0833333h; Inert atmosphere; Stage #3: 2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione In tetrahydrofuran at 0 - 20℃; Inert atmosphere; | 24% |
(R)-Phenylglycinol
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
2-((R)-2-Hydroxy-1-phenyl-ethylcarbamoyl)-cyclopentanecarboxylic acid
Conditions | Yield |
---|---|
In tetrahydrofuran 1.) 0 deg C, 15 min; 2.) r.t., 1 h; |
methylamine
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
N-Methylcyclopentane-1,2-dicarboximide
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
cis-1,2-cyclopentanedicarboxylic acid
Conditions | Yield |
---|---|
durch Ansaeuern; anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
trans-1,2-cyclopentanedicarboxylic acid
Conditions | Yield |
---|---|
anhydride of/the/ trans-cyclopentane-dicarboxylic acid-(1.2); |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
Conditions | Yield |
---|---|
bei der Destillation unter vermindertem Druck; anhydride of/the/ trans-cyclopentane-dicarboxylic acid-(1.2); |
thiazol-2-ylzinc(II) bromide
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
Conditions | Yield |
---|---|
Stage #1: thiazol-2-ylzinc(II) bromide; 2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione; tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran at 80℃; Stage #2: With sodium hydroxide In tetrahydrofuran; diethyl ether; water Stage #3: With hydrogenchloride In water pH=1; |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
(1S,5R)-3-oxabicyclo[3.3.0]octan-2-one
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: tetrahydrofuran / 1.) 0 deg C, 15 min; 2.) r.t., 1 h 2: sodium acetate / 3 h / 100 °C 3: 1 N HCl in MeOH / 2 h / Heating 4: 94 percent / NaAlH2(OCH2CH2OCH3)2 / toluene / 4 h / -78 °C 5: 96 percent / NaBH4 / aq. ethanol / 4 h / 50 °C 6: 2 N H2SO4 / 2 h / 80 °C View Scheme |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
(3aS,6aR)-hexahydro-1H-cyclopenta[c]furan-1-one
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: tetrahydrofuran / 1.) 0 deg C, 15 min; 2.) r.t., 1 h 2: sodium acetate / 3 h / 100 °C 3: 1 N HCl in MeOH / 2 h / Heating 4: 94 percent / NaAlH2(OCH2CH2OCH3)2 / toluene / 4 h / -78 °C 5: 96 percent / NaBH4 / aq. ethanol / 4 h / 50 °C 6: 2 N H2SO4 / 2 h / 80 °C View Scheme |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
2-Hydroxymethyl-cyclopentanecarboxylic acid ((R)-2-hydroxy-1-phenyl-ethyl)-amide
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: tetrahydrofuran / 1.) 0 deg C, 15 min; 2.) r.t., 1 h 2: sodium acetate / 3 h / 100 °C 3: 1 N HCl in MeOH / 2 h / Heating 4: 94 percent / NaAlH2(OCH2CH2OCH3)2 / toluene / 4 h / -78 °C 5: 96 percent / NaBH4 / aq. ethanol / 4 h / 50 °C View Scheme |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
2-((R)-2-Hydroxy-1-phenyl-ethyl)-tetrahydro-cyclopenta[c]pyrrole-1,3-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: tetrahydrofuran / 1.) 0 deg C, 15 min; 2.) r.t., 1 h 2: sodium acetate / 3 h / 100 °C 3: 1 N HCl in MeOH / 2 h / Heating View Scheme |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
3-Hydroxy-2-((R)-2-hydroxy-1-phenyl-ethyl)-hexahydro-cyclopenta[c]pyrrol-1-one
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: tetrahydrofuran / 1.) 0 deg C, 15 min; 2.) r.t., 1 h 2: sodium acetate / 3 h / 100 °C 3: 1 N HCl in MeOH / 2 h / Heating 4: 94 percent / NaAlH2(OCH2CH2OCH3)2 / toluene / 4 h / -78 °C View Scheme |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
Acetic acid (R)-2-(1,3-dioxo-hexahydro-cyclopenta[c]pyrrol-2-yl)-2-phenyl-ethyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: tetrahydrofuran / 1.) 0 deg C, 15 min; 2.) r.t., 1 h 2: sodium acetate / 3 h / 100 °C View Scheme |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
N-methylcyclopentane-1,1-dicarboximide
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 2: 51 percent / acetonitrile / 8 h / Irradiation View Scheme |
benzylamine
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
N-benzyl-3-azabicyclo[3.3.0]octane-2,4-dione
Conditions | Yield |
---|---|
In tetrahydrofuran for 18h; Heating / reflux; |
3,5-Dichloroaniline
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
C13H13Cl2NO3
Conditions | Yield |
---|---|
In tetrahydrofuran at 55℃; |
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
Conditions | Yield |
---|---|
Stage #1: (S)-1-(((S)-2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methyl)piperidin-3-amine; 2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione In 5,5-dimethyl-1,3-cyclohexadiene for 4h; Reflux; Stage #2: With hydrogenchloride In water at 20℃; | 0.33 g |
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