Dayangchem'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:126-54-5
Min.Order:1 Kilogram
FOB Price: $3.0
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:126-54-5
Min.Order:1 Kilogram
FOB Price: $1.0 / 10.0
Type:Trading Company
inquiry1.In No Less 10 years exporting experience. you 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 Specializ
Cas:126-54-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiry2,4,8,10-TETRAOXASPIRO[5.5]UNDECANE CAS:126-54-5 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 high quality
Cas:126-54-5
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:126-54-5
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
Cas:126-54-5
Min.Order:0
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
Cas:126-54-5
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryJ&H CHEM 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. J&H CHEM has some Manufacturing base in Jia
Cas:126-54-5
Min.Order:0
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
Cas:126-54-5
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryOur company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O
Cas:126-54-5
Min.Order:1 Kilogram
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:126-54-5
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
Cas:126-54-5
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
Cas:126-54-5
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
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:126-54-5
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
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
high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:Beijing or Guangzhou
Cas:126-54-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
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? We can also provide MT1 peptide powder2.
Cas:126-54-5
Min.Order:0
Negotiable
Type:Trading Company
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:126-54-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry2,4,8,10-TETRAOXASPIRO[5.5]UNDECANE,126-54-5 Application:2,4,8,10-TETRAOXASPIRO[5.5]UNDECANE,126-54-5
2,4,8,10-Tetraoxaspiro[5.5]undecane cas 126-54-5Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Cas:126-54-5
Min.Order:0
Negotiable
Type:Other
inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Cas:126-54-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry2,4,8,10-TETRAOXASPIRO[5.5]UNDECANE,126-54-5Appearance:white powder Storage:Room temperature. Package:normal packing Application:Pharmaceutical Intermediates, OLED Intermediates Transportation:By express (Door to door) such as FEDEX, DHL, EMS for sma
Cas:126-54-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryGood Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
bulk?production Application:Pharmaceutical intermediates
Cas:126-54-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Cas:126-54-5
Min.Order:0
Negotiable
Type:Trading Company
inquiryPrice, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right
Cas:126-54-5
Min.Order:0
Negotiable
Type:Trading Company
inquiryHangzhou KieRaychem Co.,Ltd.is located in Yuhang District of Hangzhou City and specialized in the chemical product customization, development, sales, import and export. Current business is focused on fine chemicals, pharmaceutical materials and int
Cas:126-54-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquirysub/micron to mesh powders (near/spheres, whiskers, flake, fiber, porous) and grain/ball, thin/ thick metal / alloys pieces / parts, thin and thick (particle) film materials /target, and custom-made crystals, substrates/parts. In the industries and a
Cas:126-54-5
Min.Order:0
Negotiable
Type:Other
inquiryUnited Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat
Cas:126-54-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryJoyinchem have been committed to chemical supply for several years and have built good cooperation records with multinational chemical corporations and importers from all over the world. Our services include:-Spot goods-Contract manufacturing-Custom
Cas:126-54-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryPentaerythritol
Dimethoxymethane
A
5,5-bis-hydroxymethyl-[1,3]dioxane
B
2,4,8,10-tetraoxaspiro[5.5]undecane
Conditions | Yield |
---|---|
Mechanism; | A 85% B n/a |
1.) LiBr, TsOH, 20 deg C, 17 h, 2.) MeOH, HCl, reflux, 2 h; Yield given. Multistep reaction; |
Conditions | Yield |
---|---|
With water; boric acid at 100℃; for 72h; pH=3; | 0.4% |
Conditions | Yield |
---|---|
With hydrogenchloride |
Pentaerythritol
Dimethoxymethane
A
2,4,8,10-tetraoxaspiro[5.5]undecane
B
1,3-Bis-methoxymethoxy-2,2-bis-methoxymethoxymethyl-propane
Conditions | Yield |
---|---|
Stage #1: ethyl acetate; (CH2O)x With sulfuric acid at 20℃; for 24h; Stage #2: at 80℃; for 7h; Further stages.; |
2,4,8,10-tetraoxaspiro[5.5]undecane
Diphenyl phosphorochloridite
tetraphenyl<4,4-bis(chloromethyl)-2,6-dioxaheptamethylene>bis-phosphonate
Conditions | Yield |
---|---|
With tin(IV) chloride for 3h; Heating; | 83.7% |
2,4,8,10-tetraoxaspiro[5.5]undecane
5,5-bis-acetoxymethyl-[1,3]dioxane
Conditions | Yield |
---|---|
With sulfuric acid; acetic anhydride |
2,4,8,10-tetraoxaspiro[5.5]undecane
sulfuric acid
acetic anhydride
5,5-bis-acetoxymethyl-[1,3]dioxane
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