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:298-57-7
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
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:298-57-7
Min.Order:1 Metric Ton
Negotiable
Type:Manufacturers
inquiryUnique advantages for Stugeron Cas 298-57-7 Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:White or almost white crystals or crystalline powder Storage:Refrigerator Package:
Cas:298-57-7
Min.Order:25 Kilogram
FOB Price: $70.0 / 74.0
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
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:298-57-7
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryADVANTAGE: 1. More than 3,000 Chinese medicine reference substances / standard products available from stock, issued on the same day, multiple cities can be delivered the next day 2. The products are provided with COA, HPLC, NMR, quality assurance,
Our 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:298-57-7
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryLIDE PHARMACEUTICALS LIMITED is a professional chemicals and APIs leading manufacturer in China. Our core business line covers APIs, Intermediates, Herb extract, etc.
Cas:298-57-7
Min.Order:1 Kilogram
FOB Price: $0.9 / 1.0
Type:Lab/Research institutions
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:298-57-7
Min.Order:1 Kilogram
FOB Price: $60.0 / 80.0
Type:Trading Company
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:298-57-7
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryJinlan Pharm-Drugs Technology Co.,Limited (with its export company Hangzhou Royall Import & Export Co.,Ltd.)is located in Hangzhou, Zhejiang Province. Neighboring Ningbo port, Shanghai port, Hangzhou Xiaoshan Int’l Airport and Shangha
Product Name: Cinnarizine CAS NO: 298-57-7 Active ingredients: Cinnarizine Specification: USP 99%min Testing Method: HPLC Appearance: White or almost white powder EINECS NO.:206-064-8 Molecular weight: 368.5139 Molecular formula: C
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
Cas:298-57-7
Min.Order:1 Kilogram
FOB Price: $200.0 / 400.0
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:298-57-7
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryCinnarizine(Stugeron) is an antihistamine medicine that works in the brain. It prevents an area of the brain called the vomiting centre from receiving nerve messages sent from the vestibular apparatus in the inner ear. The vestibular apparatus
Cas:298-57-7
Min.Order:1 Kilogram
FOB Price: $50.0 / 60.0
Type:Trading Company
inquiryStugeron CAS:298-57-7 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 intermediates, ste
Cas:298-57-7
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
Product Detail Minimum Order Qty. 10 Gram Supply Ability 500 Kilograms/Month Storage store in cool, dry, ventilated place 20℃ Delivery Time 3 business days after payment Payment Term TT,western union,Paypal,
Cas:298-57-7
Min.Order:20 Metric Ton
Negotiable
Type:Trading Company
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 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
Hubei Yuanmeng Biological Technology Co., Ltd., which is located in Wuhan, China. We are specializing in the exportation of APIs, and plant extracts ect. Our products has been exported to America, Australia, Brazil, the Europe, Middle East and other
Cas:298-57-7
Min.Order:1 Kilogram
FOB Price: $3.0 / 5.0
Type:Trading Company
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
Stugeron CAS 298-57-7 Our advantage 1.Top quality: Using high quality material and establishing a strict quality control system,assigning specific persons in charge of each part of production,from raw material purchase to assembly. 2 Profes
Cas:298-57-7
Min.Order:1 Kilogram
FOB Price: $10.0 / 50.0
Type:Trading Company
inquiryStugeron CAS 298-57-7 Purity: 99% Min Application: Intermediates Appearance: Powder Package: Bag Delivery: 3-5days Our Advantage & Service 1.Top quality: Using high quality material and establishing a strict quality control system,as
Cas:298-57-7
Min.Order:1 Kilogram
FOB Price: $10.0 / 50.0
Type:Trading Company
inquiry1. One of the domestic largest manufacturers of API; 2. High quality,competitive price and delivery in time; 3. Supplier of safe and ecofriendly products ; 4. Stable supply and efficient service; 5. Cooperate with scientific research in
Cas:298-57-7
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
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:298-57-7
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiry(CAS 298-57-7) Factory Direct 99.6% High Purity StugeronAppearance:powder Storage:store in a cool dry place and keep away from strong Package:according to customers' requirements Application:in research Transportation:By air(EMS or EUB or FedEx or TN
Cas:298-57-7
Min.Order:1 Gram
Negotiable
Type:Other
inquiryEstablished in May 2015, TaiChem Ltd. is initially invested by a British research and development company and started by PhDs back from aboard. The company is registered in China Medical City (CMC), Taizhou, Jiangsu Province, and the production site
Our 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
GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
Conditions | Yield |
---|---|
With Pd(xantphos)(MeCN)2(OTf)2 In isopropyl alcohol at 20℃; for 12h; Inert atmosphere; | 95% |
Conditions | Yield |
---|---|
With 1-methyl-pyrrolidin-2-one; iron(III)-acetylacetonate In tetrahydrofuran at 0 - 20℃; Inert atmosphere; | 90% |
Conditions | Yield |
---|---|
With 1,1'-bis-(diphenylphosphino)ferrocene; bis(η3-allyl-μ-chloropalladium(II)) In methanol at 20℃; for 12h; Temperature; Inert atmosphere; | 90% |
Conditions | Yield |
---|---|
In o-xylene at 150℃; for 30h; Inert atmosphere; Sealed tube; | 90% |
Conditions | Yield |
---|---|
With [3IPtBuPd(allyl)]OTf In benzene-d6 at 25℃; for 3h; Glovebox; Inert atmosphere; Sealed tube; | 82% |
trans-3-phenylprop-2-enyl chloride
diphenylmethylpiperazine
cinnarizine
Conditions | Yield |
---|---|
In methanol at 100℃; under 5171.62 Torr; for 0.5h; Flow reactor; | 82% |
Conditions | Yield |
---|---|
With dichloro[9,9-dimethyl-4,5- bis(diphenylphosphino)xanthene]palladium (II) In methanol at 110℃; for 36h; Inert atmosphere; diastereoselective reaction; | 75% |
1-benzhydryl-4-(2-acetaldehyde)piperazine
benzyltriphenylphosphonium chloride
A
(Z)-1-(diphenylmethyl)-4-cinnamylpiperazine
B
cinnarizine
Conditions | Yield |
---|---|
With potassium tert-butylate In dichloromethane at 5℃; Wittig Olefination; Inert atmosphere; stereoselective reaction; | A 72.8% B 8.8% |
Conditions | Yield |
---|---|
Stage #1: 1-benzoyl-4-cinnamylpiperazine With bis(triphenylphosphine)carbonyliridium(I) chloride; 1,1,3,3-Tetramethyldisiloxane In dichloromethane at 20℃; for 0.333333h; Stage #2: phenylmagnesium bromide at -78 - 20℃; for 4h; | 67% |
benzenediazonium tetrafluoroborate
1-benzhydryl-4-allyl-piperazine
cinnarizine
Conditions | Yield |
---|---|
With bathophenanthroline; bis(dibenzylideneacetone)-palladium(0) In N,N-dimethyl-formamide at 20℃; Heck Reaction; Inert atmosphere; stereoselective reaction; | 65% |
Conditions | Yield |
---|---|
With potassium phosphate; bis(η3-allyl-μ-chloropalladium(II)); triphenylphosphine In tetrahydrofuran; water at 80℃; for 16h; Sealed tube; Inert atmosphere; Schlenk technique; | 51% |
diphenylmethylpiperazine
A
(Z)-1-(diphenylmethyl)-4-cinnamylpiperazine
B
cinnarizine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: potassium carbonate; potassium iodide / 85 - 90 °C 2: hydrogen bromide; water / 20 °C 3: potassium tert-butylate / dichloromethane / 5 °C / Inert atmosphere View Scheme |
benzophenone
A
(Z)-1-(diphenylmethyl)-4-cinnamylpiperazine
B
cinnarizine
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: sodium tetrahydroborate / methanol / 20 °C 2: tetrabutylammomium bromide; hydrogenchloride / water; toluene / 40 - 45 °C 3: toluene / 60 - 100 °C 4: potassium carbonate; potassium iodide / 85 - 90 °C 5: hydrogen bromide; water / 20 °C 6: potassium tert-butylate / dichloromethane / 5 °C / Inert atmosphere View Scheme |
1-(diphenylmethyl)-4-(2,2-dimethoxyethyl)piperazine
A
(Z)-1-(diphenylmethyl)-4-cinnamylpiperazine
B
cinnarizine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: hydrogen bromide; water / 20 °C 2: potassium tert-butylate / dichloromethane / 5 °C / Inert atmosphere View Scheme |
1,1-Diphenylmethanol
A
(Z)-1-(diphenylmethyl)-4-cinnamylpiperazine
B
cinnarizine
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: tetrabutylammomium bromide; hydrogenchloride / water; toluene / 40 - 45 °C 2: toluene / 60 - 100 °C 3: potassium carbonate; potassium iodide / 85 - 90 °C 4: hydrogen bromide; water / 20 °C 5: potassium tert-butylate / dichloromethane / 5 °C / Inert atmosphere View Scheme |
diphenylchloromethane
A
(Z)-1-(diphenylmethyl)-4-cinnamylpiperazine
B
cinnarizine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: toluene / 60 - 100 °C 2: potassium carbonate; potassium iodide / 85 - 90 °C 3: hydrogen bromide; water / 20 °C 4: potassium tert-butylate / dichloromethane / 5 °C / Inert atmosphere View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: hydrogenchloride / water / 0.25 h / 120 °C / 5171.62 Torr / Flow reactor 2: acetone; tetrahydrofuran / 0.75 h / 150 °C / 12929 Torr / Flow reactor 3: methanol / 0.5 h / 100 °C / 5171.62 Torr / Flow reactor View Scheme | |
Multi-step reaction with 3 steps 1: hydrogenchloride / water; acetone / 0.17 h / 100 °C / 5171.62 Torr / Flow reactor 2: acetone; tetrahydrofuran / 0.75 h / 150 °C / 12929 Torr / Flow reactor 3: methanol / 0.5 h / 100 °C / 5171.62 Torr / Flow reactor View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: acetone; tetrahydrofuran / 0.75 h / 150 °C / 12929 Torr / Flow reactor 2: methanol / 0.5 h / 100 °C / 5171.62 Torr / Flow reactor View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: hydrogenchloride / water / 0.25 h / 120 °C / 5171.62 Torr / Flow reactor 2: methanol / 0.5 h / 100 °C / 5171.62 Torr / Flow reactor View Scheme | |
Multi-step reaction with 2 steps 1: hydrogenchloride / water / 15 h / 60 °C / 5171.62 Torr / Flow reactor 2: methanol / 0.5 h / 100 °C / 5171.62 Torr / Flow reactor View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: bromine / chloroform / 0.17 h / 0 °C 2: 1,8-diazabicyclo[5.4.0]undec-7-ene; sodium iodide / dimethyl sulfoxide / 2 h / 22 °C / Sealed tube View Scheme |
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene; sodium iodide In dimethyl sulfoxide at 22℃; for 2h; Sealed tube; stereoselective reaction; | 58 mg |
Conditions | Yield |
---|---|
With formic acid; 4Zn(2+)*4C30H23N7O3(2-)*4BF4(1-)*2C2H3N*4H(1+); sodium cyanoborohydride; triethylamine In water; acetonitrile at 24.84℃; for 12h; pH=8.5; Inert atmosphere; Irradiation; | 71 %Spectr. |
cinnarizine
cinnarizine hydrochloride
Conditions | Yield |
---|---|
With hydrogenchloride In diethyl ether at 20℃; for 4h; | 99% |
Conditions | Yield |
---|---|
In methanol at 20℃; for 1h; | 99% |
Conditions | Yield |
---|---|
Stage #1: cinnarizine With hydrogenchloride In diethyl ether Stage #2: decylsulfate ammonium salt In chloroform for 48h; Reflux; | 96% |
Conditions | Yield |
---|---|
With C56H65F5MoN2O In toluene; paraffin oil at 50℃; for 4h; diastereoselective reaction; | 95% |
Conditions | Yield |
---|---|
With trifluorormethanesulfonic acid at 25℃; for 3h; | 75% |
cinnarizine
β‐cyclodextrin
cinnarizin * β-cyclodextrin complex
Conditions | Yield |
---|---|
With hydrogenchloride; sodium hydroxide In water 2.) pH 11.0; 3.) pH 7.0; |
Conditions | Yield |
---|---|
With hydrogenchloride; sodium hydroxide In water 2.) pH 11.0; 3.) pH 7.0; |
C10H15Cl3N2O4S
cinnarizine
A
C36H39Cl3N4O4S
B
C36H39Cl3N4O4S
Conditions | Yield |
---|---|
With bis{rhodium[3,3'-(1,3-phenylene)bis(2,2-dimethylpropanoic acid)]}; bis(tertbutylcarbonyloxy)iodobenzene In benzene at 23℃; for 0.5h; Inert atmosphere; Overall yield = 21 %; | A n/a B n/a |
cinnarizine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: C56H65F5MoN2O / paraffin oil; toluene / 4 h / 50 °C 2: dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; cesium fluoride; palladium diacetate / isopropyl alcohol / 12 h / 85 °C View Scheme |
cinnarizine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: C56H65F5MoN2O / paraffin oil; toluene / 4 h / 50 °C 2: dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; cesium fluoride; palladium diacetate / isopropyl alcohol / 12 h / 85 °C View Scheme |
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