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hangzhou verychem science and technology co.ltd

远销全球

H ACID

Cas:90-20-0

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

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Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Manufacturer/High quality/Best price/In stock

Cas:90-20-0

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome 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

High quality 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid supplier in China

Cas:90-20-0

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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Wuhan Fortuna Chemical Co.,Ltd

Unique advantages for H Acid Cas 90-20-0 High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:Powder Storage:Store at room Package:25kg/bag Application:Intermediates Transportation:BY SEA/AIR/COURIER P

80% H Acid Cas 90-20-0 supplied by reliable manufacturer

Cas:90-20-0

Min.Order:25 Metric Ton

FOB Price: $8.0 / 116.0

Type:Trading Company

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Ality Chemical Corporation

The 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

Factory Supply 4-amino-5-hydroxynaphthalene-2,7-disulphonic acid

Cas:90-20-0

Min.Order:1

Negotiable

Type:Other

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Xi'an Xszo Chem Co., Ltd.

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

High Quality Oled CAS 90-20-0 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Cas:90-20-0

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Chemwill Asia Co., Ltd.

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

4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Cas:90-20-0

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Leader Biochemical Group

About Product Details Item Specification Test Results Appearance White crystalline powder Conform

China Biggest factory Supply High Quality 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS 90-20-0

Cas:90-20-0

Min.Order:1 Kilogram

FOB Price: $1.0 / 5.0

Type:Lab/Research institutions

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Henan Tianfu Chemical Co., Ltd.

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Basic information Product Name: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Synonyms: 1-AMINO-8-NAPHTHOL-3,6

TIANFU-CHEM 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid 90-20-0

Cas:90-20-0

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥97% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS:90-20-0

Cas:90-20-0

Min.Order:1 Metric Ton

FOB Price: $1150.0 / 1250.0

Type:Trading Company

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Zhuozhou Wenxi import and Export Co., Ltd

WITH 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

Factory direct supply CAS 90-20-0 with best quality

Cas:90-20-0

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Wuhan Han Sheng New Material Technology Co.,Ltd

Our 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

4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Cas:90-20-0

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages High purity, all above 98.5%, no impurities after dissolution We will test each batch to ensure quality OEM and private brand services designed for free Various cap colors available We can also provide MT1 peptide powd

CAS90-20-01-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Cas:90-20-0

Min.Order:1 Metric Ton

FOB Price: $213.0 / 245.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.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

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid 90-20-0

Cas:90-20-0

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Qingdao Beluga Import and Export Co., LTD

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS:90-20-0 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

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS:90-20-0

Cas:90-20-0

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

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Cas:90-20-0

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Changchun Artel lmport and Export trade company

Superiority Product Detail Minimum Order Qty.

Best price 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid H acid CAS 90-20-0 C10H9NO7S2

Cas:90-20-0

Min.Order:100 Kilogram

Negotiable

Type:Trading Company

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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

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Cas:90-20-0

Min.Order:1 Kilogram

FOB Price: $10.0 / 30.0

Type:Lab/Research institutions

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Hebei Miheng Trading Co., Ltd.

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS 90-20-0 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 m

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS 90-20-0

Cas:90-20-0

Min.Order:1 Kilogram

FOB Price: $10.0 / 50.0

Type:Trading Company

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Triumph International Development Limilted

Triumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Service 1.Own made fine chemical products 2.Out sourcing and qua

4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Cas:90-20-0

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

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Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Cas:90-20-0

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hefei Zhaobo Technology Co., Ltd.

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS 90-20-0 Description Purity: 99% Min Application: Intermediates Appearance: Powder Package: Bag Delivery: 3-5days Our Advantage & Service 1.Top quality: Using high quality materi

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS 90-20-0

Cas:90-20-0

Min.Order:1 Kilogram

FOB Price: $10.0 / 50.0

Type:Trading Company

inquiry

Afine Chemicals Limited

Company 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

H ACIDS

Cas:90-20-0

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Hangzhou J&H Chemical Co., Ltd.

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

H-Acid

Cas:90-20-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

SHANGHAI T&W PHARMACEUTICAL CO., LTD.

A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Cas:90-20-0

Min.Order:4 Kilogram

Negotiable

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

High quality 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Cas:90-20-0

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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SHANGHAI SYSTEAM BIOCHEM CO., LTD

We 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

4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Cas:90-20-0

Min.Order:100 Gram

FOB Price: $100.0 / 2000.0

Type:Lab/Research institutions

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HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:white crystalline powder Storage:stored in a cool, dry and ventilated place to provent sun and rain Package:25kg/drum, or as per your request. Application:Used as Pharmaceutical

4-AMINO-5-HYDROXY-2,7-NAPHTHALENEDISULFONIC ACID

Cas:90-20-0

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Product Name 1-Amino-8-Hydroxynaphthalene-3,6-Disulphonic Acid CAS No 90-20-0 Assay 98% Package 25kg/drum Usage

1-Amino-8-Hydroxynaphthalene-3,6-Disulphonic Acid

Cas:90-20-0

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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Henan Wentao Chemical Product Co., Ltd.

We are leading fine chemicals supplier in China with ISO certificate, Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...) 3.OLED

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acidCAS NO.: 90-20-0

Cas:90-20-0

Min.Order:1 Gram

FOB Price: $2.0

Type:Lab/Research institutions

inquiry

Synthetic route

C10H8N2O6S2(2-)*2Na(1+)

C10H8N2O6S2(2-)*2Na(1+)

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
With sulfuric acid; water at 90℃; for 5h;65.86%
8-amino-naphthalene-1,3,6-trisulfonic acid
117-42-0

8-amino-naphthalene-1,3,6-trisulfonic acid

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
With sodium hydroxide; water at 180 - 190℃; im offenen Gefaess;
With sodium hydroxide at 210℃; im geschlossenen Gefaess;
durch Alkalischmelze;
Stage #1: 8-amino-naphthalene-1,3,6-trisulfonic acid With sodium hydroxide under 6750.68 Torr; for 6h;
Stage #2: With sulfuric acid In water for 2h; pH=2;
1,8-diamino-3,6-naphthalenedisulfonic acid
6362-11-4

1,8-diamino-3,6-naphthalenedisulfonic acid

furan-2,3,5(4H)-trione pyridine (1:1)

furan-2,3,5(4H)-trione pyridine (1:1)

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
at 200 - 210℃;
1,8-diamino-3,6-naphthalenedisulfonic acid
6362-11-4

1,8-diamino-3,6-naphthalenedisulfonic acid

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
With sulfuric acid at 110 - 120℃;
With diluted alkali at 200 - 210℃; Kochen der erhaltenen Produkte nut verd. Schwefelsaeure oder Salzsaeure;
sulfuric acid
7664-93-9

sulfuric acid

1H-naphtho[1,8-de][1,2,3]triazine-5,8-disulfonic acid
6362-23-8

1H-naphtho[1,8-de][1,2,3]triazine-5,8-disulfonic acid

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
at 170℃;
water
7732-18-5

water

1,1-dioxo-2H-1λ6-naphth[1,8-cd]isothiazole-4,7-disulfonic acid
408511-00-2

1,1-dioxo-2H-1λ6-naphth[1,8-cd]isothiazole-4,7-disulfonic acid

sodium hydroxide

sodium hydroxide

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
at 180℃; beim Schmelzen;
4-amino-5-chloro-naphthalene-2,7-disulfonic acid
784103-83-9

4-amino-5-chloro-naphthalene-2,7-disulfonic acid

potassium hydroxide

potassium hydroxide

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
beim Verschmelzen;
2,7-naphthalenedisulfonic acid
92-41-1

2,7-naphthalenedisulfonic acid

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: durch Nitrierung und Reduktion der entstandenen Dinitroverbindung
2: diluted alkali / 200 - 210 °C / Kochen der erhaltenen Produkte nut verd. Schwefelsaeure oder Salzsaeure
View Scheme
naphthalene
91-20-3

naphthalene

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: sulfuric acid / 100 - 165 °C
1.2: 10.75 h / 30 - 165 °C
2.1: nitric acid / 10 °C
3.1: iron / 60 °C
3.2: 80 - 90 °C
4.1: sodium hydroxide / 6 h / 6750.68 Torr
4.2: 2 h / pH 2
View Scheme
naphthalene-1,3,6-trisulfonic acid
86-66-8

naphthalene-1,3,6-trisulfonic acid

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: nitric acid / 10 °C
2.1: iron / 60 °C
2.2: 80 - 90 °C
3.1: sodium hydroxide / 6 h / 6750.68 Torr
3.2: 2 h / pH 2
View Scheme
1-aminonaphthalene-3,6,8-trisulphonic acid trisodium salt

1-aminonaphthalene-3,6,8-trisulphonic acid trisodium salt

A

chromatotropic acid
148-25-4

chromatotropic acid

B

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

C

C10H9NO7S2

C10H9NO7S2

Conditions
ConditionsYield
Stage #1: 1-aminonaphthalene-3,6,8-trisulphonic acid trisodium salt With sodium hydroxide In methanol at 180 - 200℃; under 21002.1 Torr;
Stage #2: With sulfuric acid In methanol
naphthalene
91-20-3

naphthalene

A

chromatotropic acid
148-25-4

chromatotropic acid

B

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

C

C10H9NO7S2

C10H9NO7S2

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: sulfur trioxide; sulfuric acid / 65 - 150 °C
1.2: 40 °C
2.1: hydrogen / 170 °C / 150015 Torr
3.1: sodium hydroxide / methanol / 180 - 200 °C / 21002.1 Torr
View Scheme
1,3,5-trichloro-2,4,6-triazine
108-77-0

1,3,5-trichloro-2,4,6-triazine

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

1,4-bis((4-aminophenyl)amino)anthrancene-9,10-dione
2944-29-8

1,4-bis((4-aminophenyl)amino)anthrancene-9,10-dione

aniline
62-53-3

aniline

C64H42Cl2N16O16S4

C64H42Cl2N16O16S4

Conditions
ConditionsYield
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With sodium carbonate In water at 0 - 5℃; for 1h; pH=4 - 5;
Stage #2: aniline In water at 25 - 30℃; for 3h; pH=5 - 6;
Stage #3: 1,4-bis((4-aminophenyl)amino)anthrancene-9,10-dione Further stages;
91.3%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

C12H16N2O6S2

C12H16N2O6S2

C22H22N4O13S4

C22H22N4O13S4

Conditions
ConditionsYield
Stage #1: C12H16N2O6S2 With hydrogenchloride; sodium nitrite In water
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With sodium hydrogencarbonate In water for 3h; pH=3.5;
90%
1,3,5-trichloro-2,4,6-triazine
108-77-0

1,3,5-trichloro-2,4,6-triazine

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt

1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt

sodium 7-aminonaphthalene-1,3,6-trisulphonate

sodium 7-aminonaphthalene-1,3,6-trisulphonate

C46H27ClN9O24S7(7-)*7Na(1+)

C46H27ClN9O24S7(7-)*7Na(1+)

Conditions
ConditionsYield
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt In water at 0 - 5℃; for 4h; pH=4- 6.5;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 28 - 35℃; pH=3.5 - 4;
Stage #3: sodium 7-aminonaphthalene-1,3,6-trisulphonate Further stages;
86.4%
1,3,5-trichloro-2,4,6-triazine
108-77-0

1,3,5-trichloro-2,4,6-triazine

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt

1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt

sodium 3‐aminonaphthalene‐1,5‐disulfonate

sodium 3‐aminonaphthalene‐1,5‐disulfonate

C46H28ClN9O21S6(6-)*6Na(1+)

C46H28ClN9O21S6(6-)*6Na(1+)

Conditions
ConditionsYield
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt In water at 0 - 5℃; for 4h; pH=4- 6.5;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 28 - 35℃; pH=3.5 - 4;
Stage #3: sodium 3‐aminonaphthalene‐1,5‐disulfonate Further stages;
86.4%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

10-[(4'-bromomethyl)benzil]phenothiazine
246253-72-5

10-[(4'-bromomethyl)benzil]phenothiazine

4-hydroxy-5-(4-phenothiazin-10-ylmethyl-benzylamino)-naphthalene-2,7-disulfonic acid
246253-74-7

4-hydroxy-5-(4-phenothiazin-10-ylmethyl-benzylamino)-naphthalene-2,7-disulfonic acid

Conditions
ConditionsYield
With sodium acetate In water at 5 - 25℃; for 8h; Condensation;85%
1,3,5-trichloro-2,4,6-triazine
108-77-0

1,3,5-trichloro-2,4,6-triazine

2-amino-1-benzenesulfonic acid
88-21-1

2-amino-1-benzenesulfonic acid

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt

1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt

C42H27ClN9O18S5(5-)*5Na(1+)

C42H27ClN9O18S5(5-)*5Na(1+)

Conditions
ConditionsYield
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt In water at 0 - 5℃; for 4h; pH=4- 6.5;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 28 - 35℃; pH=3.5 - 4;
Stage #3: 2-amino-1-benzenesulfonic acid Further stages;
84.23%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

bis(2-hydroxyethyl) 2-aminoterephthalate

bis(2-hydroxyethyl) 2-aminoterephthalate

C22H21N3O13S2

C22H21N3O13S2

Conditions
ConditionsYield
Stage #1: bis(2-hydroxyethyl) 2-aminoterephthalate With hydrogenchloride; cis-nitrous acid In water at 5℃; for 5h; pH=8.5;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With sodium carbonate for 1h; pH=8.5;
83.3%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

3-{4-[(E)-2-(2,4-Dichloro-phenyl)-vinyl]-phenyl}-2-mercapto-4-oxo-3,4-dihydro-quinazoline-6-diazonium

3-{4-[(E)-2-(2,4-Dichloro-phenyl)-vinyl]-phenyl}-2-mercapto-4-oxo-3,4-dihydro-quinazoline-6-diazonium

5-Amino-3-(3-{4-[(E)-2-(2,4-dichloro-phenyl)-vinyl]-phenyl}-2-mercapto-4-oxo-3,4-dihydro-quinazolin-6-ylazo)-4-hydroxy-naphthalene-2,7-disulfonic acid

5-Amino-3-(3-{4-[(E)-2-(2,4-dichloro-phenyl)-vinyl]-phenyl}-2-mercapto-4-oxo-3,4-dihydro-quinazolin-6-ylazo)-4-hydroxy-naphthalene-2,7-disulfonic acid

Conditions
ConditionsYield
With sodium carbonate; sodium chloride In water 1.) 0-5 deg C, 3 h; 2.) 60 deg C, 1 h;83%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

3-aminobenzoyl fluoride

3-aminobenzoyl fluoride

C24H15F2N5O9S2

C24H15F2N5O9S2

Conditions
ConditionsYield
Stage #1: 3-aminobenzoyl fluoride With hydrogenchloride; sodium nitrite In water at 0 - 5℃;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With ammonium chloride In water at 0 - 5℃; for 0.666667h; pH=5.5 - 6.5;
81%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

3-aminoterephthalic acid
10312-55-7

3-aminoterephthalic acid

C18H13N3O11S2

C18H13N3O11S2

Conditions
ConditionsYield
Stage #1: 3-aminoterephthalic acid With hydrogenchloride; cis-nitrous acid In water at 10℃; for 5h;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With sodium carbonate pH=7.5;
80.2%
2-(p-aminophenylsulfonyl)ethyl hydrogen sulfate
2494-89-5

2-(p-aminophenylsulfonyl)ethyl hydrogen sulfate

1,3,5-trichloro-2,4,6-triazine
108-77-0

1,3,5-trichloro-2,4,6-triazine

2-amino-1-benzenesulfonic acid
88-21-1

2-amino-1-benzenesulfonic acid

1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

1-hydroxy-6-amino-3-naphthalenesulfonic acid

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

2,4-Diaminobenzenesulfonic acid
88-63-1

2,4-Diaminobenzenesulfonic acid

C43H27ClN12O23S7(6-)*6Na(1+)

C43H27ClN12O23S7(6-)*6Na(1+)

Conditions
ConditionsYield
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 7-amino-4-hydroxy-2-naphthalenesulfonic acid With sodium hydroxide In water at 0 - 5℃; pH=5.6 - 6.5;
Stage #2: With sodium carbonate In water at 3 - 5℃; for 5h;
Stage #3: 2-(p-aminophenylsulfonyl)ethyl hydrogen sulfate; 2-amino-1-benzenesulfonic acid; 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid; 2,4-Diaminobenzenesulfonic acid Further stages;
77.1%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

p-toluenesulfonyl chloride
98-59-9

p-toluenesulfonyl chloride

N-(p-tosyl)-H-acid
6860-97-5

N-(p-tosyl)-H-acid

Conditions
ConditionsYield
With sodium acetate; sodium hydroxide In water at 70℃; pH=3 - 6; Darkness;77%
1,3,5-trichloro-2,4,6-triazine
108-77-0

1,3,5-trichloro-2,4,6-triazine

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

1-(4'-sulfophenyl)-3-methylpyrazol-5-one
26878-11-5

1-(4'-sulfophenyl)-3-methylpyrazol-5-one

2-amino-4-acetylaminobenzene sulfonic acid
88-64-2

2-amino-4-acetylaminobenzene sulfonic acid

2-amino-1,4-benzenedisulfonic acid monosodium Salt
24605-36-5

2-amino-1,4-benzenedisulfonic acid monosodium Salt

C35H26ClN11O20S6

C35H26ClN11O20S6

Conditions
ConditionsYield
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 2-amino-1,4-benzenedisulfonic acid monosodium Salt In water at 0℃; for 3h; pH=6;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 35℃; for 4h; pH=4 - 5;
Stage #3: 1-(4'-sulfophenyl)-3-methylpyrazol-5-one; 2-amino-4-acetylaminobenzene sulfonic acid Further stages;
58.7%
trifluoro-[1,3,5]triazine
675-14-9

trifluoro-[1,3,5]triazine

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

1-(4'-sulfophenyl)-3-methylpyrazol-5-one
26878-11-5

1-(4'-sulfophenyl)-3-methylpyrazol-5-one

2-amino-4-acetylaminobenzene sulfonic acid
88-64-2

2-amino-4-acetylaminobenzene sulfonic acid

2-amino-1,4-benzenedisulfonic acid monosodium Salt
24605-36-5

2-amino-1,4-benzenedisulfonic acid monosodium Salt

C35H26FN11O20S6

C35H26FN11O20S6

Conditions
ConditionsYield
Stage #1: trifluoro-[1,3,5]triazine; 2-amino-1,4-benzenedisulfonic acid monosodium Salt In water at 0 - 5℃; pH=3 - 4;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 25℃; pH=4 - 5;
Stage #3: 1-(4'-sulfophenyl)-3-methylpyrazol-5-one; 2-amino-4-acetylaminobenzene sulfonic acid Further stages;
52.1%
C4H4ClN4(1+)*Cl(1-)

C4H4ClN4(1+)*Cl(1-)

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

C18H13Cl2N9O7S2(2-)*2Na(1+)

C18H13Cl2N9O7S2(2-)*2Na(1+)

Conditions
ConditionsYield
With sodium acetate; acetic acid In water for 0.5h;49%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

4-Dodecyl-benzenediazonium

4-Dodecyl-benzenediazonium

C28H35N3O7S2(2-)*2Na(1+)

C28H35N3O7S2(2-)*2Na(1+)

Conditions
ConditionsYield
pH 5;44%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

4,4'-Diaminostilbene dihydrochloride

4,4'-Diaminostilbene dihydrochloride

C34H22N6O14S4(4-)*4Na(1+)

C34H22N6O14S4(4-)*4Na(1+)

Conditions
ConditionsYield
Stage #1: 4,4'-Diaminostilbene dihydrochloride diazotization;
Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
38.5%
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

4-Dodecyl-benzenediazonium

4-Dodecyl-benzenediazonium

C28H35N3O7S2(2-)*2Na(1+)

C28H35N3O7S2(2-)*2Na(1+)

Conditions
ConditionsYield
pH 9;38%
phosgene
75-44-5

phosgene

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

2-oxo-2,3-dihydro-naphth[1,8-de][1,3]oxazine-5,8-disulfonic acid
97629-54-4

2-oxo-2,3-dihydro-naphth[1,8-de][1,3]oxazine-5,8-disulfonic acid

Conditions
ConditionsYield
With alkali
8-formylquinoline
38707-70-9

8-formylquinoline

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

4-[8]quinolylmethylenamino-5-hydroxy-naphthalene-2,7-disulfonic acid

4-[8]quinolylmethylenamino-5-hydroxy-naphthalene-2,7-disulfonic acid

Conditions
ConditionsYield
With ethanol; water
1,3,5-trichloro-2,4,6-triazine
108-77-0

1,3,5-trichloro-2,4,6-triazine

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

4-(4,6-dichloro-[1,3,5]triazin-2-ylamino)-5-hydroxy-naphthalene-2,7-disulfonic acid
7538-88-7

4-(4,6-dichloro-[1,3,5]triazin-2-ylamino)-5-hydroxy-naphthalene-2,7-disulfonic acid

Conditions
ConditionsYield
With sodium hydroxide
With sodium hydroxide In water at 0 - 5℃; for 1.5h;
With sodium hydroxide; disodium hydrogenphosphate In water at 0℃; for 2h; pH=3;
6-methoxyquinolin-8-amine
90-52-8

6-methoxyquinolin-8-amine

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

4-amino-5-hydroxy-3,6-bis-(6-methoxy-[8]quinolylazo)-naphthalene-2,7-disulfonic acid

4-amino-5-hydroxy-3,6-bis-(6-methoxy-[8]quinolylazo)-naphthalene-2,7-disulfonic acid

3-acetoxy-2-naphthoyl chloride
53855-64-4

3-acetoxy-2-naphthoyl chloride

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

4-hydroxy-5-(3-hydroxy-[2]naphthoylamino)-naphthalene-2,7-disulfonic acid

4-hydroxy-5-(3-hydroxy-[2]naphthoylamino)-naphthalene-2,7-disulfonic acid

Conditions
ConditionsYield
With alkali Verseifung der entstandenen Acetylverbindung mit verd. Natronlauge;
2-methoxy-benzenediazonium
17356-93-3

2-methoxy-benzenediazonium

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

5-amino-4-hydroxy-3-(2-methoxy-phenylazo)-naphthalene-2,7-disulfonic acid

5-amino-4-hydroxy-3-(2-methoxy-phenylazo)-naphthalene-2,7-disulfonic acid

Conditions
ConditionsYield
With sodium carbonate
4-methylbenzene diazonium
57573-52-1

4-methylbenzene diazonium

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

5-amino-4-hydroxy-3-p-tolylazo-naphthalene-2,7-disulfonic acid
84077-76-9

5-amino-4-hydroxy-3-p-tolylazo-naphthalene-2,7-disulfonic acid

Conditions
ConditionsYield
With sodium carbonate
o-Carboxybenzenediazonium
17333-86-7

o-Carboxybenzenediazonium

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

2-(8-amino-1-hydroxy-3,6-disulfo-[2]naphthylazo)-benzoic acid
36429-86-4

2-(8-amino-1-hydroxy-3,6-disulfo-[2]naphthylazo)-benzoic acid

Conditions
ConditionsYield
With sodium carbonate
diazotiertes o-Phenetidin
24892-65-7

diazotiertes o-Phenetidin

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
90-20-0

4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid

3-(2-ethoxy-phenylazo)-5-amino-4-hydroxy-naphthalene-2,7-disulfonic acid

3-(2-ethoxy-phenylazo)-5-amino-4-hydroxy-naphthalene-2,7-disulfonic acid

Conditions
ConditionsYield
With sodium carbonate
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