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Hebei Nengqian Chemical Import and Export Co., LTD

Our 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

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:1 Gram

FOB Price: $1000.0 / 1300.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.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

2,3-Pentanedione,4,5-dihydroxy-

Cas:142937-55-1

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Qingdao Beluga Import and Export Co., LTD

2,3-Pentanedione, 4,5-dihydroxy- (9CI)CAS:142937-55-1 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 qu

2,3-Pentanedione, 4,5-dihydroxy- (9CI)CAS:142937-55-1

Cas:142937-55-1

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Shandong Hanjiang Chemical Co., Ltd.

Hello, 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

2,3-Pentanedione,4,5-dihydroxy-

Cas:142937-55-1

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Henan Wentao Chemical Product Co., Ltd.

Henan 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

2,3-Pentanedione,4,5-dihydroxy-

Cas:142937-55-1

Min.Order:0

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Type:Lab/Research institutions

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Hebei Quanhe Biotechnology Co. LTD

1. 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

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:1 Kilogram

FOB Price: $80.0 / 100.0

Type:Lab/Research institutions

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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo 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

2,3-Pentanedione,4,5-dihydroxy-

Cas:142937-55-1

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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Jiangsu Qianyu Molecular Technology Co., LTD.

Our Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an

Best Offer2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Trading Company

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Golden Pharma Co., Limited

GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:1 Kilogram

Negotiable

Type:Other

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Hebei Mojin Biotechnology Co.,Ltd

We produce carbomer by our own factory,carbomer 940 is our best seller.It is used for cosmetic and medical.And we also become agent for lubrizol.Our carbomer 940 get high viscosity and good transparency.The price will depond on the market,surely supp

2,3-Pentanedione,4,5-dihydroxy-

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Trading Company

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Hangzhou J&H Chemical Co., Ltd.

J&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xi`an Eastling Biotech Co., Ltd.

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

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Manufacturers

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Antimex Chemical Limied

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

2,3-Pentanedione,4,5-dihydroxy-

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Henan Tianfu Chemical Co., Ltd.

2,3-Pentanedione,4,5-dihydroxy- Application:Organic Chemicals

2,3-Pentanedione,4,5-dihydroxy-

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Lab/Research institutions

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DB BIOTECH CO., LTD

best seller Application:API

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Trading Company

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Henan Kanbei Chemical Co.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hebei Muhuang Technology Co., Ltd

best seller Application:API

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Trading Company

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ZHEJIANG JIUZHOU CHEM CO.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

2,3-Pentanedione, 4,5-dihydroxy- (9CI)

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Trading Company

inquiry

HuBei Ipure Biotech CO.,ltd

HuBei ipure is a diversified product production and operation enterprise, with API, pharma intermediates, and other fine chemicals as well as R&D and pigments development and sales as one of the large enterprises, with more than 130 acres of pl

2,3-Pentanedione,4,5-dihydroxy- CAS NO.142937-55-1

Cas:142937-55-1

Min.Order:1 Kilogram

FOB Price: $1.0 / 2.0

Type:Trading Company

inquiry

Nanjing Raymon Biotech Co., Ltd.

2,3-Pentanedione,4,5-dihydroxy-Appearance:Off white to slight yellow solid Storage:Store in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/Pharmaceutical intermediates Transportation:By Sea,by Air,B

2,3-Pentanedione,4,5-dihydroxy-

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Trading Company

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Hebei Ruishun Trade Co.,Ltd

Supply top quality products with a reasonable price Application:api

142937-55-1

Cas:142937-55-1

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

3-(1,2-dihydroxy-ethyl)-but-3-en-2-one
866249-99-2

3-(1,2-dihydroxy-ethyl)-but-3-en-2-one

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
Stage #1: 3-(1,2-dihydroxy-ethyl)-but-3-en-2-one With ozone In d(4)-methanol at -78℃; for 0.5h;
Stage #2: With dimethylsulfide In methanol at 20℃; for 16h;
3-[2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-ethyl]-but-3-en-2-one
866249-98-1

3-[2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-ethyl]-but-3-en-2-one

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: 78 percent / TBAF / tetrahydrofuran / 20 °C
2.1: O3 / tetradeuteriomethanol / 0.5 h / -78 °C
2.2: Me2S / methanol / 16 h / 20 °C
View Scheme
3-diazo-4,5-dihydroxypentan-2-one
1203707-89-4

3-diazo-4,5-dihydroxypentan-2-one

A

C5H8O4

C5H8O4

B

(2R, 4S)-2-methyl-2,3,3,4-tetrahydroxy tetrahydrofuran

(2R, 4S)-2-methyl-2,3,3,4-tetrahydroxy tetrahydrofuran

C

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
With 3,3-dimethyldioxirane In acetone at 20℃; Inert atmosphere;
3-diazo-4,5-dihydroxypentan-2-one
1203707-89-4

3-diazo-4,5-dihydroxypentan-2-one

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
With 3,3-dimethyldioxirane In acetone at 20℃;
With 3,3-dimethyldioxirane In acetone at 20℃; Product distribution / selectivity;
rac-1-[(tert-butyldimethylsilyl)oxy]pent-3-yn-2-ol
1314558-94-5

rac-1-[(tert-butyldimethylsilyl)oxy]pent-3-yn-2-ol

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: Dowex50WX8 100–200 mesh / methanol / 20 °C
2: toluene-4-sulfonic acid / 20 °C
3: sodium periodate; ruthenium (IV) oxide monohydrate; water / chloroform; acetonitrile / 20 °C
4: Dowex 50WX8 resin / water / 20 °C
View Scheme
Multi-step reaction with 2 steps
1.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 1 h
2.1: ozone / acetone; dichloromethane / 0.08 h / -78 °C / Darkness; Inert atmosphere
2.2: -78 °C
View Scheme
pent-3-yne-1,2-diol
133095-72-4

pent-3-yne-1,2-diol

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: toluene-4-sulfonic acid / 20 °C
2: sodium periodate; ruthenium (IV) oxide monohydrate; water / chloroform; acetonitrile / 20 °C
3: Dowex 50WX8 resin / water / 20 °C
View Scheme
Stage #1: pent-3-yne-1,2-diol With ozone In dichloromethane; acetone at -78℃; for 0.0833333h; Darkness; Inert atmosphere;
Stage #2: With triphenylphosphine at -78℃;
39 mg
2-(prop-1-yn-1-yl)-1,4-dioxaspiro[4.5]decane

2-(prop-1-yn-1-yl)-1,4-dioxaspiro[4.5]decane

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium periodate; ruthenium (IV) oxide monohydrate; water / chloroform; acetonitrile / 20 °C
2: Dowex 50WX8 resin / water / 20 °C
View Scheme
1-{1,4-dioxaspiro[4.5]decan-2-yl}propane-1,2-dione

1-{1,4-dioxaspiro[4.5]decan-2-yl}propane-1,2-dione

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
With Dowex 50WX8 resin In water at 20℃;
S-ribosylhomocysteine

S-ribosylhomocysteine

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

Conditions
ConditionsYield
With S-ribosylhomocysteine; EC: 4.4.1.21 Enzymatic reaction;
1,2-diamino-benzene
95-54-5

1,2-diamino-benzene

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

2-(1',2'-dihydroxyethyl)-3-methyl quinoxaline
32706-30-2

2-(1',2'-dihydroxyethyl)-3-methyl quinoxaline

Conditions
ConditionsYield
100%
at 20℃; for 0.166667h; Inert atmosphere;
In water-d2 at 20℃;
In chloroform-d1 for 0.75h;76 mg
boric acid
11113-50-1

boric acid

4,5-dihydroxy-2,3-pentanedione
142937-55-1

4,5-dihydroxy-2,3-pentanedione

C5H10BO7(1-)

C5H10BO7(1-)

Conditions
ConditionsYield
In water-d2

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