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:92-44-4
Min.Order:1 Kilogram
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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:92-44-4
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inquiryHebei yanxi chemical co., LTD is a professional research, development and production 2-phenylacetamide enterprise backbone members by local well-known entrepreneurs and professional senior engineers in the party's "low carbon environ
Cas:92-44-4
Min.Order:100 Gram
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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
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Cas:92-44-4
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inquiryShanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu
Cas:92-44-4
Min.Order:1 Kilogram
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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:92-44-4
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inquiryProduct Name: 2,3-Dihydroxynaphthalene Synonyms: 2,3-Dihydroxynapthalene;Naphthalene-2,3-diol;Naphthalenediol-(2,3);2,3-DIHYDROXYNAPHTHALENE;2,3-NAPHTHALENEDIOL;2,3-DIHYDROXYNAPHTHALENE, SUBL.;2 3-DIHYDROXYNAPHTHALENE 98%;2,3-DihydroxylNaphthalene
Cas:92-44-4
Min.Order:1 Kilogram
FOB Price: $500.0
Type:Lab/Research institutions
inquiryOur advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva
Cas:92-44-4
Min.Order:1 Kilogram
FOB Price: $9.0 / 99.0
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:92-44-4
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryOur 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:92-44-4
Min.Order:10 Kilogram
Negotiable
Type:Trading Company
inquiryName: 2,3-Dihydroxynaphthalene Synonyms: 2,3-Naphthalenediol CAS:92-44-4 MF: C10H8O2 Appearance: white powder Storage:Store in cool and dry place, away from sun light. Package: 25kgs/drum Application:Dye Intermediates Transportation:By sea or by a
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Cas:92-44-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryHangzhou Huarong Pharm Co., Ltd. established since 2009 , has been always focusing on supplying products and services to our clients in the field of small molecule drug. Huarong Pharm has built platforms for the research, development and manufac
Cas:92-44-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryAbout Product Details Items Specifications Test Results Appearance White to white crystalline powde
Cas:92-44-4
Min.Order:100 Kilogram
FOB Price: $1.0 / 2.0
Type:Lab/Research institutions
inquiry2,3-Dihydroxynaphthalene CAS:92-44-4 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 int
Cas:92-44-4
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:92-44-4
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
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Cas:92-44-4
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryBest quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia
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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
Massive 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
Cas:92-44-4
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:92-44-4
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:92-44-4
Min.Order:100 Gram
FOB Price: $100.0 / 2000.0
Type:Lab/Research institutions
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,
Product Name: 2,3-Dihydroxynaphthalene Synonyms: 2,3-Dihydroxynapthalene;Naphthalene-2,3-diol;Naphthalenediol-(2,3);2,3-DIHYDROXYNAPHTHALENE;2,3-NAPHTHALENEDIOL;2,3-Dihydroxynaphthylene;2,3-dihydrroxynaphthalene;2,3-Dihydroxynaphthalene 1g [92-
Cas:92-44-4
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:92-44-4
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
Cas:92-44-4
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiry2,3-naphthalenediol
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In neat (no solvent, solid phase) at 20℃; for 0.583333h; Green chemistry; | 95% |
2,3-naphthalenediol
Conditions | Yield |
---|---|
With aluminum (III) chloride In benzene for 5h; Reflux; | 92% |
Conditions | Yield |
---|---|
With 2,4,6-trimethylphenylcarbene copper; dihydrogen peroxide; trimethyldodecylammonium chloride In octane at 50℃; for 7h; Reagent/catalyst; | 83.8% |
Multi-step reaction with 2 steps 1.1: boron tribromide / hexane / 60 h / 120 °C / Sealed tube 1.2: 0.03 h / 0 °C / Schlenk technique 2.1: 3-chloro-benzenecarboperoxoic acid / water; ethanol / 6 h / 0 - 20 °C View Scheme |
Conditions | Yield |
---|---|
With orcinol; Acetobacterium dehalogenans veratrol-O-demethylase; Desulfitobacterium hafniense methyltransferase dhaf4611 In aq. buffer at 35℃; for 24h; pH=6.5; Inert atmosphere; Enzymatic reaction; regioselective reaction; | A 81% B 19% |
3-tert-butoxy-2-hydroxynaphthalene
A
6-tert-butyl-2,3-dihydroxynaphthalene
B
2,3-naphthalenediol
Conditions | Yield |
---|---|
With sulfuric acid In n-heptane; dichloromethane at 20℃; for 2h; | A 76.7% B n/a |
Conditions | Yield |
---|---|
With aluminum tri-bromide In ethanethiol at 0℃; for 0.5h; | 73% |
With aluminum tri-bromide In ethanethiol at 0℃; for 0.5h; | 73% |
Conditions | Yield |
---|---|
With sodium carbonate at 145℃; for 5h; | A 19% B 67% C 46% D 14% |
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 2h; | 60% |
syn-1,2:3,4-naphthalene dioxide
2,3-naphthalenediol
Conditions | Yield |
---|---|
In xylene at 190℃; for 24h; | 50% |
Conditions | Yield |
---|---|
beim Schmelzen; Erwaermen des entstehenden 2.3-Dioxy-naphthalin-sulfonsaeure-(6) auf 280-320grad; |
2,3-naphtho-15-crown-5
A
naphthalene
B
β-naphthol
C
2,3-naphthalenediol
Conditions | Yield |
---|---|
In tetrahydrofuran for 0.25h; selectivity of reductive cleavage of the aryl-oxygen bonds; also for other arenocrown ethers; |
2,3-naphthalenediol-2,3-diacetate
2,3-naphthalenediol
Conditions | Yield |
---|---|
With lipase of Pseudomonas sp; water In various solvent(s) at 25℃; for 14h; Hydrolysis; deacetylation; | |
With lipase from Candida rugosa; cholate functionalized DOPC vesicles In aq. buffer for 24h; Enzymatic reaction; |
Conditions | Yield |
---|---|
With sulfuric acid |
2,3-naphthalenediol
Conditions | Yield |
---|---|
With sulfuric acid at 150 - 160℃; |
2,3-naphthalenediol
Conditions | Yield |
---|---|
With sulfuric acid at 180 - 190℃; | |
at 200℃; | |
With sodium hydroxide at 300 - 320℃; | |
at 200℃; | |
at 230 - 240℃; |
2,3-naphthalenediol
Conditions | Yield |
---|---|
With sulfuric acid at 180℃; |
2,3-naphthalenediol
Conditions | Yield |
---|---|
With sodium hydroxide at 300 - 320℃; |
Conditions | Yield |
---|---|
at 180 - 200℃; |
6,7,8-trihydroxy-[1]naphthoic acid
hydrogen iodide
A
6,7-dihydroxy-[1]naphthoic acid
B
β-naphthol
C
2,3-naphthalenediol
2,3-naphthalenediol
Conditions | Yield |
---|---|
Conversion of starting material; |
C18H26O2Si
2,3-naphthalenediol
Conditions | Yield |
---|---|
Stage #1: C18H26O2Si With palladium(II) trimethylacetate; [bis(acetoxy)iodo]benzene In α,α,α-trifluorotoluene at 120℃; Inert atmosphere; Stage #2: With tetrabutyl ammonium fluoride In tetrahydrofuran at 20℃; Stage #3: With water In tetrahydrofuran |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: 1H-imidazole / tetrahydrofuran / 20 °C / Inert atmosphere 1.3: 20 °C 2.1: palladium(II) trimethylacetate; [bis(acetoxy)iodo]benzene / α,α,α-trifluorotoluene / 120 °C / Inert atmosphere 2.2: 20 °C View Scheme |
naphthalene-2,3-diyl dihexanoate
2,3-naphthalenediol
Conditions | Yield |
---|---|
With lipase from Candida rugosa; cholate functionalized DOPC vesicles In aq. buffer for 24h; Enzymatic reaction; |
2,3-naphthalenediol
Conditions | Yield |
---|---|
With β-glucosidase from almond; cholate functionalized DOPC vesicles In aq. buffer for 24h; Enzymatic reaction; |
Conditions | Yield |
---|---|
With 3-chloro-benzenecarboperoxoic acid In ethanol; water at 0 - 20℃; for 6h; Overall yield = 0.02 g; |
Conditions | Yield |
---|---|
With sodium hydroxide; triisooctyl amine In dichloromethane; water at 0℃; for 10h; | 100% |
With sodium hydroxide In dichloromethane; water at 0℃; for 10h; | 100% |
With potassium carbonate In acetone for 15h; Heating; | 94% |
Conditions | Yield |
---|---|
at 100 - 110℃; for 2h; | 100% |
acetyl chloride
2,3-naphthalenediol
poly(2,3-diacetoxy-1,4-naphthylene), product of asymmetric oxidative coupling polymerization and acetylation, methanol-insoluble part, Mn 6.2E3 Da, Mw/Mn 2.3 by SEC; monomer(s): 2,3-dihydroxynaphthalene; acetyl chloride
Conditions | Yield |
---|---|
Stage #1: 2,3-naphthalenediol With oxygen; (S,S)-2,2'-isopropylidenebis(4-phenyl-2-oxazoline); copper(l) chloride In tetrahydrofuran at 20℃; for 48h; Stage #2: acetyl chloride With pyridine In dichloromethane for 12h; | 100% |
acetyl chloride
2,3-naphthalenediol
poly(2,3-diacetoxy-1,4-naphthylene), product of asymmetric oxidative coupling polymerization and acetylation, methanol-insoluble part, Mn 6.9E3 Da, Mw/Mn 1.5 by SEC; monomer(s): 2,3-dihydroxynaphthalene; acetyl chloride
Conditions | Yield |
---|---|
Stage #1: 2,3-naphthalenediol With oxygen; (S,S)-2,2'-methylenebis(4-phenyl-2-oxazoline); copper(l) chloride In tetrahydrofuran at 20℃; for 24h; Stage #2: acetyl chloride With pyridine In dichloromethane for 12h; | 100% |
Conditions | Yield |
---|---|
With Et4NClO4 In acetonitrile byproducts: H2; Electrolysis; using indium metall anode, platinum wire cathode in soln. of Et4NClO4 and dihydroxynaphthalene (2 h, N2, 20 mA), hydrogen gas evolving at the cathode and forming product at the anode; product collected by filtration, washed with acetonitrile and Et2O, dried (vac.); elem. anal.; | 100% |
Conditions | Yield |
---|---|
In acetonitrile naphthalene diol reacted with soln. of B(OCH3)3 at 60°C for 1 h; tetraethylene glycol monoacrylate added, stirred for 2 h; cooled; solvent evapd. at 40°C for 24 h; | 100% |
2,3-naphthalenediol
Conditions | Yield |
---|---|
In pentane at 20℃; for 19h; Schlenk technique; Glovebox; Inert atmosphere; | 100% |
4-Nitrophthalonitrile
2,3-naphthalenediol
2,3-bis-(3,4-dicyanophenoxy)naphthalene
Conditions | Yield |
---|---|
With potassium carbonate In dimethyl sulfoxide for 24h; Ambient temperature; | 99.22% |
4-Nitrophthalonitrile
2,3-naphthalenediol
B
2,3-bis-(3,4-dicyanophenoxy)naphthalene
Conditions | Yield |
---|---|
With potassium carbonate In methanol; dimethyl sulfoxide | A 99.2% B n/a |
methanesulfonyl chloride
2,3-naphthalenediol
2,3-bis(methylsulfonyloxy)naphthalene
Conditions | Yield |
---|---|
With triethylamine In chloroform at 0℃; | 99% |
With triethylamine In dichloromethane for 2h; Product distribution / selectivity; | 96% |
With triethylamine In ethyl acetate at 0 - 20℃; for 0.166667h; Green chemistry; | 88% |
Conditions | Yield |
---|---|
With boric acid In acetone | 99% |
Conditions | Yield |
---|---|
at 120℃; for 0.25h; | 99% |
Conditions | Yield |
---|---|
In acetone mixt. of alkaloid, boric acid and 2,3-dihydroxynaphthalene (molar ratio 1:1:2) dissolved in hot acetone, warmed; evapd., noncryst. solid product; | 99% |
Conditions | Yield |
---|---|
In toluene for 7h; Reflux; | 99% |
Conditions | Yield |
---|---|
In methanol at -20℃; for 0.25h; Inert atmosphere; | 99% |
Conditions | Yield |
---|---|
Stage #1: aniline With hydrogenchloride; sodium nitrite In water for 0.5h; Stage #2: 2,3-naphthalenediol In water for 0.5h; | 99% |
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