As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch
Cas:38771-21-0
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryhigh quality Appearance:White or off-white Solid Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea Port:shanghai
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:38771-21-0
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryOur main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block
Cas:38771-21-0
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
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:38771-21-0
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryWith our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
Cas:38771-21-0
Min.Order:1 Kilogram
FOB Price: $1.0 / 10.0
Type:Trading Company
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:38771-21-0
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry4-BROMO-1-BUTYNE CAS:38771-21-0 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 intermed
Cas:38771-21-0
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:38771-21-0
Min.Order:1 Kilogram
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
Our 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:38771-21-0
Min.Order:10 Kilogram
Negotiable
Type:Trading Company
inquiry1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures
Cas:38771-21-0
Min.Order:1 Kilogram
FOB Price: $20.0 / 30.0
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
Cas:38771-21-0
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryMassive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and als
Cas:38771-21-0
Min.Order:1 Gram
FOB Price: $1.0
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
Cas:38771-21-0
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryWe are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov
Cas:38771-21-0
Min.Order:100 Gram
FOB Price: $100.0 / 2000.0
Type:Lab/Research institutions
inquiry4-BROMO-1-BUTYNE Basic information Product Name: 4-BROMO-1-BUTYNE Synonyms: 4-BROMO-1-BUTYNE, 98%4-BROMO-1-BUTYNE, 98%4-BROMO-1-BUTYNE, 98%4-BROMO-1-BUTYNE, 98%;4-BROMO-1-BUTYNE;4-Bromo-1-butyne,1-Bromo-3-butyne;1-Bromo-3-butyne;3-Butynyl Brom
factory?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:38771-21-0
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
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
1.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
Triumph 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 Business Custom Synthesis:
Cas:38771-21-0
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
1, 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
The process is mature and can be mass produced to 100 kg, with good quality and purity up to 99%.The product has a large stock and can be supplied stably. Package:bottle Application:Drug R&D Transportation:Sealed drying(25℃) Port:ShangHai
4-Bromo-1-butyneAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air
Lower 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
high 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
Acmec 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:38771-21-0
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiry1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.
Cas:38771-21-0
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryAnsciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
Cas:38771-21-0
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry1-butyn-4-ol
4-bromobut-1-yne
Conditions | Yield |
---|---|
With phosphorus tribromide | 27% |
With pyridine; diethyl ether; phosphorus tribromide | |
With pyridine; phosphorus tribromide | |
In phosphorus tribromide; diethyl ether | 11 g (59%) |
With phosphorus tribromide |
3-butyn-1-yl p-toluenesulfonate
4-bromobut-1-yne
Conditions | Yield |
---|---|
With ethoxyethoxyethanol; calcium bromide | |
With lithium bromide In acetone Yield given; | |
With sodium bromide In acetonitrile |
4-bromobut-1-yne
1-(azidomethyl)-4-methoxybenzene
Conditions | Yield |
---|---|
Stage #1: 4-bromobut-1-yne; 1-(azidomethyl)-4-methoxybenzene With copper(ll) sulfate pentahydrate; sodium L-ascorbate In ethanol; water at 25℃; for 12h; Green chemistry; Stage #2: With sodium hydroxide In ethanol; water at 45℃; for 8h; Reagent/catalyst; Temperature; Concentration; Green chemistry; | 99% |
4-bromobut-1-yne
2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine
2-(4-bromobut-1-en-2-yl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine
Conditions | Yield |
---|---|
With (1,3-bis(2,6-di-iso-propylphenyl)-4,5-dihydroimidazol-2-ylidene) copper chloride; potassium tert-butylate In tetrahydrofuran; methanol at 50℃; for 3h; Schlenk technique; Inert atmosphere; regioselective reaction; | 99% |
4-bromobut-1-yne
Conditions | Yield |
---|---|
Stage #1: tert-butyl 2,9-diazaspiro[5.5]undecane-9-carboxylate hydrochloride With caesium carbonate In acetonitrile at 20℃; for 0.166667h; Stage #2: 4-bromobut-1-yne In acetonitrile for 18h; Reflux; | 98% |
With caesium carbonate In acetonitrile for 18h; Reflux; | 98% |
With caesium carbonate In acetonitrile at 60℃; | 72% |
With caesium carbonate In acetonitrile Reflux; | 13.6 g |
4-bromobut-1-yne
Conditions | Yield |
---|---|
With copper(ll) sulfate pentahydrate; sodium L-ascorbate; benzoic acid In water; tert-butyl alcohol at 20℃; for 0.333333h; Inert atmosphere; | 98% |
Conditions | Yield |
---|---|
With copper(II) loaded mesoporous SBA-15 In dichloromethane at 20℃; Huisgen Cycloaddition; regioselective reaction; | 98% |
4-bromobut-1-yne
(E)-6-chloro-1-iodo-hex-1-ene
Conditions | Yield |
---|---|
Stage #1: 4-bromobut-1-yne With n-butyllithium In tetrahydrofuran at -78 - -30℃; for 0.333333h; Inert atmosphere; Stage #2: (2-methylallyl)zinc bromide*LiCl In tetrahydrofuran at -30 - 20℃; for 1h; Inert atmosphere; Stage #3: (E)-6-chloro-1-iodo-hex-1-ene With trifuran-2-yl-phosphane; bis(dibenzylideneacetone)-palladium(0) In tetrahydrofuran at 20℃; for 1h; Inert atmosphere; | 98% |
4-bromobut-1-yne
1-(azidomethyl)-4-methoxybenzene
1-methoxybenzyl-5-vinyl-(1H)-1,2,3-triazole
Conditions | Yield |
---|---|
Stage #1: 4-bromobut-1-yne; 1-(azidomethyl)-4-methoxybenzene With pentamethylcyclopentadienyl bis(triphenylphosphine)ruthenium(II) chloride In 1,4-dioxane at 60℃; for 12h; Inert atmosphere; Green chemistry; Stage #2: With sodium hydroxide In 1,4-dioxane; ethanol; water at 45℃; for 8h; Reagent/catalyst; Inert atmosphere; Green chemistry; | 97% |
4-bromobut-1-yne
cyclohexane carbonitrile
Conditions | Yield |
---|---|
Stage #1: cyclohexane carbonitrile With lithium diisopropyl amide In tetrahydrofuran; hexane at -78℃; for 0.5h; Inert atmosphere; Stage #2: 4-bromobut-1-yne In tetrahydrofuran; hexane at -78 - 24℃; for 14h; Inert atmosphere; | 97% |
Conditions | Yield |
---|---|
In tetrahydrofuran at 68℃; for 20h; Heating / reflux; | A n/a B 96.1% |
4-bromobut-1-yne
1-azidooctane
4-(2-bromoethyl)-1-octyl-1H-1,2,3-triazole
Conditions | Yield |
---|---|
With copper(II) acetate monohydrate In water at 20℃; regioselective reaction; | 96% |
Conditions | Yield |
---|---|
With potassium carbonate; potassium iodide In acetonitrile Inert atmosphere; Reflux; | 96% |
4-bromobut-1-yne
methyl 2-fluoro-5-nitro-benzoate
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 0 - 70℃; for 5h; | 96% |
chloro-trimethyl-silane
4-bromobut-1-yne
4-bromo-1-trimethylsilylbut-1-yne
Conditions | Yield |
---|---|
Stage #1: 4-bromobut-1-yne With n-butyllithium In diethyl ether; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: chloro-trimethyl-silane In diethyl ether; hexane at -78 - 20℃; Inert atmosphere; | 95% |
With n-butyllithium Multistep reaction; | |
With n-butyllithium 1) THF, n-hexane, -70 deg C, 4 h, 2) room temperature, 20 h; Yield given. Multistep reaction; |
4-bromobut-1-yne
4-(2-azidoethyl)-1-[2-(1-octyl-1H-1,2,3-triazol-4-yl)ethyl]-1H-1,2,3-triazole
4-{2-[4-(2-bromoethyl)-1H-1,2,3-triazol-1-yl]ethyl}-1-[2-(1-octyl-1H-1,2,3-triazol-4-yl)ethyl]-1H-1,2,3-triazole
Conditions | Yield |
---|---|
With copper(II) acetate monohydrate In water at 20℃; regioselective reaction; | 95% |
4-bromobut-1-yne
1-(azidomethyl)-4-methoxybenzene
1-methoxybenzyl-4-bromoethyl-(1H)-1,2,3-triazole
Conditions | Yield |
---|---|
With copper(ll) sulfate pentahydrate; sodium L-ascorbate In ethanol; water at 25℃; for 12h; Reagent/catalyst; Temperature; Concentration; Green chemistry; | 95% |
4-bromobut-1-yne
3-methylbenzo[g]pteridine-2,4(1H,3H)-dione
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide for 24h; Inert atmosphere; | 95% |
4-bromobut-1-yne
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dimethyl sulfoxide at 78℃; for 4h; | 95% |
4-bromobut-1-yne
benzyl azide
1-benzyl-4-(2-bromoethyl)-1H-1,2,3-triazole
Conditions | Yield |
---|---|
With [5-(3-butylimidazol-2-yliden-1-yl)-25,26,27,28-tetrapropyloxycalix[4]arene]copper bromide In neat (no solvent) at 20℃; for 4h; Inert atmosphere; | 94% |
With copper(l) iodide In glycerol at 20℃; for 7h; Green chemistry; | 93% |
With copper(II) acetate monohydrate In water at 20℃; regioselective reaction; | 89% |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 80℃; for 48h; | 94% |
4-bromobut-1-yne
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran for 18h; | 94% |
Conditions | Yield |
---|---|
With potassium carbonate; potassium iodide In acetonitrile Inert atmosphere; Reflux; | 94% |
Conditions | Yield |
---|---|
With copper(l) iodide In acetonitrile | 94% |
4-bromobut-1-yne
1-bromo-4-(diazomethyl)benzene
Conditions | Yield |
---|---|
Stage #1: 4-bromobut-1-yne With copper(l) iodide; triethylamine In 1,4-dioxane for 0.166667h; Flow reactor; Stage #2: 1-bromo-4-(diazomethyl)benzene In 1,4-dioxane; dichloromethane at 20℃; for 0.166667h; Flow reactor; | 93% |
4-bromobut-1-yne
4-(2-azidoethyl)-1-octyl-1H-1,2,3-triazole
4-(2-bromoethyl)-1-[2-(1-octyl-1H-1,2,3-triazol-4-yl)ethyl]-1H-1,2,3-triazole
Conditions | Yield |
---|---|
With copper(II) acetate monohydrate In water at 20℃; regioselective reaction; | 92% |
Conditions | Yield |
---|---|
With copper(l) iodide; triethylamine In N,N-dimethyl-formamide at 30℃; for 0.5h; Sonication; | 92% |
4-bromobut-1-yne
2-(3-azidopropyl)-1H-isoindolone-1,3(2H)-dione
C15H15BrN4O2
Conditions | Yield |
---|---|
With copper(l) iodide; triethylamine In N,N-dimethyl-formamide at 30℃; for 0.5h; Sonication; | 92% |
Conditions | Yield |
---|---|
With potassium carbonate In acetone for 6h; Reflux; Inert atmosphere; | 92% |
Conditions | Yield |
---|---|
With tetrakis(actonitrile)copper(I) hexafluorophosphate; N-ethyl-N,N-diisopropylamine In acetonitrile at 70℃; for 4h; Inert atmosphere; Darkness; | 92% |
4-bromobut-1-yne
Conditions | Yield |
---|---|
With tetrakis(actonitrile)copper(I) hexafluorophosphate; tris[(1-benzyl-1H-1,2,3-triazol-4yl)methyl]amine In methanol at 20℃; | 91% |
Conditions | Yield |
---|---|
With potassium hydroxide In ethanol for 24h; Reflux; | 91% |
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