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:6051-66-7
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
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
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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
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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:6051-66-7
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
Cas:6051-66-7
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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Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryCangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new ap
Cas:6051-66-7
Min.Order:1 Kilogram
FOB Price: $5.0
Type:Manufacturers
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
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Min.Order:0
Negotiable
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
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Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryProduct Name: 2,5-DIMETHYLTEREPHTHALIC ACID Synonyms: RARECHEM AL BO 0786;2,5-DIMETHYLTEREPHTHALIC ACID;2,5-Dimethyl-1,4-benzenedicarboxylic acid;2,5-diMethylbenzene-1,4-dicarboxylic acid;1,4-Benzenedicarboxylic acid, 2,5-dimethyl-;2,5-Dimethyl
Cas:6051-66-7
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryZhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed
Cas:6051-66-7
Min.Order:1 Kilogram
FOB Price: $2.0
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:6051-66-7
Min.Order:1 Metric Ton
FOB Price: $7.0 / 8.0
Type:Trading Company
inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
Cas:6051-66-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryStock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:6051-66-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryLower 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
Cas:6051-66-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
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
R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;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
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Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiryhigh quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
Cas:6051-66-7
Min.Order:0
Negotiable
Type:Manufacturers
inquiryShanghai Finebiotech Co.,Ltd.was established in 2020, which providing professional chemical services. As a customer-oriented company, we have distinguished ourself from others in providing worldwide customers with cost-effective and efficient service
bulk productiongoods in stockswe have the best competitive price in the marketmeantime,we are committed to service to our every customer Chemsigma International Co.,Ltd. is a chemical manufacturer, specialize in custom synthesis and organic chemical
Cas:6051-66-7
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:6051-66-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry★.Best quality according to requirement ★.Competitive price in China market ★.Mature Technical support ★.Professional logistic support
Cas:6051-66-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryAppearance: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:6051-66-7
Min.Order:0
Negotiable
Type:Trading Company
inquirySupply top quality products with a reasonable price Application:api
2,5-Dimethylterephthalic acid cas 6051-66-7Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Best quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
Cas:6051-66-7
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:6051-66-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry6051-66-7 Application:intermediate
Cas:6051-66-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry*stable and better quality products*efficient and meticulous servicesAppearance:Powder Storage:Store in dry, cool and ventilated place Package:10G/bottle 1kg/tin 5kg/tin 25kg/carton Application:1. Chemical raw materials 2. Used as an analytical reage
1,2,4,5-tetrahydro-p-xylene-3,6-dicarboxylic acid
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With palladium on activated charcoal | 93% |
Conditions | Yield |
---|---|
Stage #1: tetrahydrofuran; 2,5-dibromo-p-xylene With magnesium at 60℃; Schlenk technique; Inert atmosphere; Glovebox; Stage #2: With iodine at 60℃; Schlenk technique; Inert atmosphere; | 54% |
carbon dioxide
Potassium benzoate
A
terephthalic acid
B
2-methylterephthalic acid
C
2,5-dimethylterephthalic acid
D
2,3,5-trimethyl-1,4-dicarboxybenzene
E
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
Conditions | Yield |
---|---|
With potassium acetate; potassium phthalate; zinc(II) oxide at 450℃; under 25858.1 Torr; Henkel Reaction; | A 50% B n/a C n/a D n/a E n/a |
Conditions | Yield |
---|---|
Stage #1: 2,5-dibromo-p-xylene With N,N,N,N,-tetramethylethylenediamine; tert.-butyl lithium In tetrahydrofuran; pentane at -70℃; for 2.5h; Stage #2: carbon dioxide at -70℃; Further stages.; | 40% |
Stage #1: 2,5-dibromo-p-xylene With n-butyllithium In tetrahydrofuran; pentane at -70℃; for 2.5h; Inert atmosphere; Stage #2: carbon dioxide In tetrahydrofuran; pentane Cooling with acetone-dry ice; |
1,2,4,5-tetramethylbenzene
A
2,5-dimethylterephthalic acid
B
4,6-dimethylisophthalic acid
Conditions | Yield |
---|---|
With nitric acid |
2,5-dimethylbenzene-1,4-dicarbonitrile
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With sulfuric acid | |
With potassium hydroxide In diethylene glycol Heating; |
2,4,5-trimethylbenzoic acid
A
2,5-dimethylterephthalic acid
B
4,6-dimethylisophthalic acid
Conditions | Yield |
---|---|
With permanganate(VII) ion |
2,5-dimethyl-4-ethylacetophenone
A
1,2,4,5-benzenetetracarboxylic acid
B
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With nitric acid at 140 - 150℃; im Rohr; |
1,2,4,5-tetramethylbenzene
nitric acid
A
2,5-dimethylterephthalic acid
B
4,6-dimethylisophthalic acid
C
2,4,5-trimethylbenzoic acid
A
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With nitric acid |
Conditions | Yield |
---|---|
With nitric acid |
(2,4,5-trimethyl-phenyl)-glyoxylic acid
nitric acid
A
2,5-dimethylterephthalic acid
B
4,6-dimethylisophthalic acid
1,2,4,5-tetramethylbenzene
A
5-methyl-1,2,4-benzenetricarboxylic acid
B
2,5-dimethylterephthalic acid
C
4,6-dimethylisophthalic acid
D
2,4,5-trimethylbenzoic acid
Conditions | Yield |
---|---|
With water; oxygen; bromide; cobalt(II) acetate; manganese(II) acetate In acetic acid at 95℃; atmospheric pressure; Further byproducts.; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 81 percent / dimethylformamide / 48 h / Heating 2: KOH / bis-(2-hydroxy-ethyl) ether / Heating View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: aluminium chloride; carbon disulfide 2: nitric acid / 140 - 150 °C / im Rohr View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: amalgamated zinc; hydrochloric acid 2: aluminium chloride; carbon disulfide 3: nitric acid / 140 - 150 °C / im Rohr View Scheme |
1,2,4,5-tetramethylbenzene
A
1,2,4,5-benzenetetracarboxylic acid
B
5-methyl-1,2,4-benzenetricarboxylic acid
C
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With oxygen; zirconium(IV) sulfate; cobalt(II) acetate; manganese(II) acetate; 2,6-dihydroxypyrrolo[3,4-f]isoindolo-1,3,5,7(2H,6H)tetrone In acetic acid at 80 - 120℃; under 15001.5 Torr; for 2h; Product distribution / selectivity; | A 8 %Chromat. B 50 %Chromat. C 23 %Chromat. |
1,2,4,5-tetramethylbenzene
A
5-methyl-1,2,4-benzenetricarboxylic acid
B
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With oxygen; zirconium(IV) sulfate; cobalt(II) acetate; manganese(II) acetate; 2,6-dihydroxypyrrolo[3,4-f]isoindolo-1,3,5,7(2H,6H)tetrone In acetic acid at 80 - 120℃; under 15001.5 Torr; for 2h; Product distribution / selectivity; | A 50 %Chromat. B 25 %Chromat. |
1,2,4,5-tetramethylbenzene
A
2,5-dimethylterephthalic acid
B
2,4,5-trimethylbenzoic acid
Conditions | Yield |
---|---|
With oxygen; zirconium(IV) sulfate; cobalt(II) acetate; manganese(II) acetate; 2,6-dihydroxypyrrolo[3,4-f]isoindolo-1,3,5,7(2H,6H)tetrone In acetic acid at 60 - 70℃; under 6000.6 Torr; for 2h; Product distribution / selectivity; | A 15 %Chromat. B 50 %Chromat. |
methanol
2,5-dimethylterephthalic acid
2,5-dimethylterephthalic acid, dimethyl ester
Conditions | Yield |
---|---|
With thionyl chloride for 3h; Heating / reflux; | 99% |
With thionyl chloride at 0℃; Reflux; Inert atmosphere; | 99% |
With sulfuric acid | |
With sulfuric acid Heating; | |
With methanesulfonic acid for 10h; Heating; Yield given; |
2,5-dimethylterephthalic acid
diazomethyl-trimethyl-silane
2,5-dimethylterephthalic acid, dimethyl ester
Conditions | Yield |
---|---|
Stage #1: 2,5-dimethylterephthalic acid; diazomethyl-trimethyl-silane In methanol; hexanes; diethyl ether at 0 - 20℃; for 0.5h; Stage #2: With acetic acid In methanol; hexanes; diethyl ether | 93% |
2,5-dimethylterephthalic acid
tris[4-( pyridin-4-yl)-phenyl]amine
Conditions | Yield |
---|---|
In methanol; N,N-dimethyl-formamide at 60℃; for 48h; | 86% |
Conditions | Yield |
---|---|
Stage #1: 2,5-dimethylterephthalic acid; K(2 - x)(NMe4)x[I2Mo10O10S10(OH)10(H2O)5]·20H2O With potassium hydroxide In water at 50℃; for 0.5h; pH=4.5; Stage #2: ethanol; tetramethlyammonium chloride In water at 20℃; | 85% |
ammonium cerium (IV) nitrate
2,5-dimethylterephthalic acid
water
N,N-dimethyl-formamide
Conditions | Yield |
---|---|
at 100℃; for 0.25h; High pressure; Sealed tube; | 85% |
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
Stage #1: 2,5-dimethylterephthalic acid; K(2 - x)(NMe4)x[I2Mo10O10S10(OH)10(H2O)5]·20H2O With potassium hydroxide In water at 50℃; for 0.5h; pH=4.5; Stage #2: cesium chloride In water at 20℃; | 81% |
2,5-dimethylterephthalic acid
N,N-dimethyl-formamide
Conditions | Yield |
---|---|
at 119.84℃; for 24h; High pressure; Sealed tube; | 80% |
Conditions | Yield |
---|---|
Stage #1: 1,4-diaza-bicyclo[2.2.2]octane; nickel(II) chloride hexahydrate; 2,5-dimethylterephthalic acid In N,N-dimethyl-formamide for 24h; Stage #2: In N,N-dimethyl-formamide at 120℃; for 48h; Sealed tube; | 79% |
2,5-bis(pyridine-4-yl)thiazolo[5,4-d]thiazole
2,5-dimethylterephthalic acid
N,N-dimethyl-formamide
Conditions | Yield |
---|---|
at 100℃; for 48h; Autoclave; | 78% |
2,5-dimethylterephthalic acid
N,N-dimethyl-formamide
Conditions | Yield |
---|---|
With 1,3-di(4-pyridyl)propane at 120℃; for 48h; High pressure; | 59% |
at 20 - 110℃; for 79.5h; | 35.92% |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 65℃; for 8h; | 59% |
Conditions | Yield |
---|---|
at 20 - 110℃; for 79.5h; | 58.93% |
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With NaOH; HNO3 In water High Pressure; the carboxylic acid and 2 equiv. of NaOH were dissolved in H2O, pH was adjusted to 7 with HNO3, 1 equiv. of Zn-salt was added, teflon-lined steel autoclave, heating to 170 °C with 0.2 °C/min rate, keeping at this temp. for 3 d; slow cooling to room temp. (0.1 °C/min), crystals were filtered off, washed with H2O, dried in air, elem. anal.; | 57% |
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 23℃; for 18h; | 55% |
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
at 99.84℃; for 24h; High pressure; Sealed tube; | 52% |
2,5-dimethylterephthalic acid
benzene-1,3,5-triacrylic acid
Conditions | Yield |
---|---|
In ethanol; N,N-dimethyl-formamide at 85℃; for 24h; | 43% |
Conditions | Yield |
---|---|
at 90℃; for 3h; | 33.04% |
2,5-dimethylterephthalic acid
Conditions | Yield |
---|---|
With NaOH; HNO3 In water High Pressure; the carboxylic acid and 2 equiv. of NaOH were dissolved in H2O, pH was adjusted to 7 with HNO3, 1 equiv. of Zn-salt was added, teflon-lined steel autoclave, heating to 150 °C with 0.2 °C/min rate, keeping at this temp. for 3 d; slow cooling to room temp. (0.1 °C/min), crystals were filtered off, washed with H2O, dried in air, elem. anal.; | 31% |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 120℃; for 24h; | 25.3% |
In N,N-dimethyl-formamide at 20℃; for 4h; Alkaline conditions; |
2,5-dimethylterephthalic acid
N,N-dimethyl-formamide
Conditions | Yield |
---|---|
With water at 20 - 110℃; for 79.5h; | 21% |
Conditions | Yield |
---|---|
With phosphorus pentachloride | |
With phosphorus pentachloride; benzene |
2,5-dimethylterephthalic acid
4-(N-isopropylamidino)-1,2-phenylene diamine
Conditions | Yield |
---|---|
With PPA 1.) 110 deg C, 45 min, 2.) from 110 to 200 deg C, 2 h; |
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