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
Cas:2503-44-8
Min.Order:1 Metric Ton
Negotiable
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:2503-44-8
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
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:2503-44-8
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiry3,4-DIHYDROXYPHENYLACETONE CAS:2503-44-8 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 organi
Cas:2503-44-8
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:2503-44-8
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryOur advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can be
Cas:2503-44-8
Min.Order:1 Kilogram
FOB Price: $30.0 / 40.0
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
Cas:2503-44-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
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 s
Cas:2503-44-8
Min.Order:1 Kilogram
FOB Price: $10.0 / 100.0
Type:Lab/Research institutions
inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
Cas:2503-44-8
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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 Transportation:Express/Sea/Air Port:Ningbo/Shanghai/Qingd
J&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:2503-44-8
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:2503-44-8
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryProduct name: 3,4-Dihydroxyphenylacetone CAS No.:2503-44-8 Molecule Formula:C9H10O3 Molecule Weight:166.17 Purity: 99.0% Package: 25kg/drum Description:White powder Manufacture Standards:Enterprise Standard TESTING ITEMS
Cas:2503-44-8
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryGMP 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,
Cas:2503-44-8
Min.Order:1 Milligram
Negotiable
Type:Trading Company
inquiryStock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:2503-44-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryhigh purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier
Cas:2503-44-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
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:2503-44-8
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiryhigh purity Storage:normal temperature Package:DRUM Application:mainly for medical use for R&Dpurpose use only Transportation:AIR,SEA Port:BEIJING,SHANGHAI,TIANJIN,SHENZHEN
TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp
Ansciep 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:2503-44-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryFactory supply high purity low priceAppearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China
Cas:2503-44-8
Min.Order:0
Negotiable
Type:Trading Company
inquiry2-Propanone,1-(3,4-dihydroxyphenyl)- cas 2503-44-8Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Cas:2503-44-8
Min.Order:0
Negotiable
Type:Other
inquiryBest quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
Cas:2503-44-8
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:2503-44-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWe are professional supplier in China for this product, we are dedicated to providing customers with the best quality, price, and service. Please feel free to send us inquiries.Appearance:Please contact us for product details Package:As per shipment
bulk?production Application:Pharmaceutical intermediates
Cas:2503-44-8
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
Best Seller, High Quality, Competitive Price, Fast Delivery, Quick ResponseAppearance:powder, or liquid Storage:Stored in room temperature, ventilated place Package:Bottle, barrel, cargo, container, etc. Application:Pharmaceuticals, intermediates, AP
1.Professional synthesis laboratory and production base. 2.Strong synthesis team and service team. 3.Professional data management system. 4.We provide the professional test date and product information ,ex. HNMR ,CNMR,FNMR, HPLC/G
Cas:2503-44-8
Min.Order:10 Milligram
Negotiable
Type:Lab/Research institutions
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:2503-44-8
Min.Order:0
Negotiable
Type:Trading Company
inquiryConditions | Yield |
---|---|
With methylimidazolium bromide at 110℃; for 0.00277778h; Microwave irradiation; Green chemistry; | 95% |
guaiacylglycerol-β-guaiacyl ether
A
1-(3,4-dihydroxyphenyl)-2-propanone
B
benzene-1,2-diol
Conditions | Yield |
---|---|
With methylimidazolium bromide at 110℃; for 0.333333h; Sealed tube; Inert atmosphere; Green chemistry; | A 78% B 21% |
1-<3,4-di-(t-butyldimethylsilyloxy)-phenyl>-2-propanone
1-(3,4-dihydroxyphenyl)-2-propanone
Conditions | Yield |
---|---|
With triethylamine hydrofluoride In tetrahydrofuran for 2h; Ambient temperature; | 73% |
(+/-)-1-(3,4-dihydroxy-phenyl)-2-dimethylamino-propan-1-one
1-(3,4-dihydroxyphenyl)-2-propanone
Conditions | Yield |
---|---|
With hydrogenchloride |
2-(3,4-dihydroxyphenyl)-1,3-propylenedithioacetal
1-(3,4-dihydroxyphenyl)-2-propanone
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 95 percent / imidazole / dimethylformamide / Ambient temperature 2: 1.) n-BuLi, i-Pr2NH / 1.) THF, -76 deg C, 0.5 h, 2.) THF, -76 deg C, 1 h 3: 48 percent / 1percent NaOH, Raney nickel W-2 / tetrahydrofuran / 5 h / Heating 4: 73 percent / 1.3M Et3N*HF / tetrahydrofuran / 2 h / Ambient temperature View Scheme |
2-<3,4-di-(t-butyldimethylsilyloxy)-phenyl>-1,3-propylenedithioacetal
1-(3,4-dihydroxyphenyl)-2-propanone
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 1.) n-BuLi, i-Pr2NH / 1.) THF, -76 deg C, 0.5 h, 2.) THF, -76 deg C, 1 h 2: 48 percent / 1percent NaOH, Raney nickel W-2 / tetrahydrofuran / 5 h / Heating 3: 73 percent / 1.3M Et3N*HF / tetrahydrofuran / 2 h / Ambient temperature View Scheme |
1-<3,4-di-(t-butyldimethylsilyloxy)-phenyl>-1-oxo-propanone-1,3-propylenedithioacetal
1-(3,4-dihydroxyphenyl)-2-propanone
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 48 percent / 1percent NaOH, Raney nickel W-2 / tetrahydrofuran / 5 h / Heating 2: 73 percent / 1.3M Et3N*HF / tetrahydrofuran / 2 h / Ambient temperature View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 88 percent / AcOH, BF3*Et2O / 5 °C 2: 95 percent / imidazole / dimethylformamide / Ambient temperature 3: 1.) n-BuLi, i-Pr2NH / 1.) THF, -76 deg C, 0.5 h, 2.) THF, -76 deg C, 1 h 4: 48 percent / 1percent NaOH, Raney nickel W-2 / tetrahydrofuran / 5 h / Heating 5: 73 percent / 1.3M Et3N*HF / tetrahydrofuran / 2 h / Ambient temperature View Scheme |
S(-)-carbidopa
A
1-(3,4-dihydroxyphenyl)-2-propanone
B
6,7-dihydroxy-3-methylcinnoline
C
3-(3,4-dihydroxyphenyl)-2-methylpropanoic acid
Conditions | Yield |
---|---|
With bovine myeloperoxidase; dihydrogen peroxide In aq. buffer at 20℃; pH=6; Catalytic behavior; Reagent/catalyst; Enzymatic reaction; |
1-(3,4-dihydroxyphenyl)-2-propanone
Conditions | Yield |
---|---|
With boron tribromide In dichloromethane at 20℃; for 1h; condensation; | 77% |
diazomethane
1-(3,4-dihydroxyphenyl)-2-propanone
3,4-dimethoxyphenylacetone
Conditions | Yield |
---|---|
With diethyl ether |
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