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Dayang Chem (Hangzhou) Co.,Ltd.

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 quantiti

High purity J acid 98% TOP1 supplier in China

Cas:87-02-5

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Wuhan Fortuna Chemical Co.,Ltd

Product Name: J acid Synonyms: 7-amino-4-hydroxy-2-naphthalenesulfonicaci;kyselina6-amino-1-naftol-3-sulfonova;kyselinai;6-amino-1-naphthol-3-sulfonicacid(2-5-7);2-AMINO-5-HYDROXYNAPHTHALENE-7-SULFONIC ACID;2-AMINO-5-NAPHTHOL-7-SULFONIC ACID;7-

High quality of J acid with best price in China

Cas:87-02-5

Min.Order:25 Kilogram

FOB Price: $7.0 / 9.5

Type:Trading Company

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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 2-Amino-5-Naphthol-7-Sulfonic Acid supplier in China

Cas:87-02-5

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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Hefei TNJ chemical industry co.,ltd

1. Quality Our products meet MSDS safe standard and we have ISO and other certificate so yan can get high quality products from our company. 2. Price We are the company which is the joint of trade and industry so we cao provide the competiti

J acid CAS 87-02-5

Cas:87-02-5

Min.Order:1 Metric Ton

Negotiable

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 7-amino-4-hydroxynaphthalene-2-sulphonic acid

Cas:87-02-5

Min.Order:1

Negotiable

Type:Other

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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

7-Amino-4-hydroxy-2-naphthalenesulfonic acid

Cas:87-02-5

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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GIHI CHEMICALS CO.,LIMITED

GIHI CHEMICALS exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, GIHI CHEMICALS is your best choice. pls contact with us freely for getting detailed prod

J acid

Cas:87-02-5

Min.Order:1 Gram

FOB Price: $3.0

Type:Lab/Research institutions

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Leader Biochemical Group

About Product Details J acid Chemical Properties density 1.4338 (rough estimate) vapor pressure 0Pa at 25℃

China Largest factory Manufacturer Supply 2-Amino-5-naphthol-7-sulfonic Acid CAS 87-02-5

Cas:87-02-5

Min.Order:1 Kilogram

FOB Price: $3.0 / 10.0

Type:Lab/Research institutions

inquiry

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

J acid

Cas:87-02-5

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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Henan Tianfu Chemical Co., Ltd.

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

87-02-5 J acid

Cas:87-02-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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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 87-02-5 with best quality

Cas:87-02-5

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Product name:J acid CAS#: 87-02-5 EINECS: 201-718-9 Molecular formula: C10H9NO4S Molecular weight:239.25 Appearance: grey powder Appearance:Grey to light brown powder Storage:Store in cool and dry place, away from sun light. Package: 25kg

J Acid

Cas:87-02-5

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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Hangzhou Sartort Biopharma Co., Ltd

Appearance:Grey to light brown powder Storage:R.T Package:25kg/Bag Application:As an important dye intermediate Transportation:Express/Sea/Air Port:Any port in China

Top quality J acid cas:87-02-5

Cas:87-02-5

Min.Order:1 Metric Ton

FOB Price: $3000.0 / 8300.0

Type:Lab/Research institutions

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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

J acid 87-02-5

Cas:87-02-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

J acid CAS: 87-02-5 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 intermediates, stero

J acid CAS: 87-02-5

Cas:87-02-5

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

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

J acid

Cas:87-02-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Changchun Artel lmport and Export trade company

Minimum Order Qty. 10 Gram Supply Ability 500 Kilograms/Month Storage store in cool, dry, ventilated place 20℃ Delivery Time 3 business days after payment Payment Term TT,western union,Paypal,MoneyGram Package 10g,20g,50g,100g,500g,1KGS,

High purity J acid supplier in China CAS NO.87-02-5

Cas:87-02-5

Min.Order:10 Gram

Negotiable

Type:Trading Company

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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

J acid

Cas:87-02-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

Buy 4c-prc 4f-php 4cpvp sale from Shanghai Kaiwodun

Cas:87-02-5

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

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

J acid

Cas:87-02-5

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

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

2-Amino-5-naphthol-7-sulfonic Acid

Cas:87-02-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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 2-Amino-5-Naphthol-7-Sulfonic Acid

Cas:87-02-5

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

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

Buy 4c-prc 4f-php 4cpvp sale from Shanghai Kaiwodun

Cas:87-02-5

Min.Order:100 Gram

FOB Price: $100.0 / 2000.0

Type:Lab/Research institutions

inquiry

TaiChem Taizhou Limited

Established in May 2015, TaiChem Ltd. is initially invested by a British research and development company and started by PhDs back from aboard. The company is registered in China Medical City (CMC), Taizhou, Jiangsu Province, and the production site

J acid

Cas:87-02-5

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

6-Amino-1-hydroxy-3-naphthalenesulfonic acid

Cas:87-02-5

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

EAST CHEMSOURCES LIMITED

factory?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

J acid

Cas:87-02-5

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu 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

J acid

Cas:87-02-5

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong 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

J acid

Cas:87-02-5

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

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

J acid

Cas:87-02-5

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

2-Amino-5-naphthol-7-sulfonic Acid

Cas:87-02-5

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Synthetic route

6-amino-naphthalene-1,3-disulfonic acid
118-33-2

6-amino-naphthalene-1,3-disulfonic acid

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

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

Conditions
ConditionsYield
durch Alkalischmelze;
With alkali at 180℃;
naphthalene-1,3,6-trisulfonic acid
86-66-8

naphthalene-1,3,6-trisulfonic acid

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

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

Conditions
ConditionsYield
With sodium hydroxide anschliessend Erhitzen mit wss. Ammoniak und Schwefeldioxid;
6-amino-naphthalene-1,3-disulfonic acid
118-33-2

6-amino-naphthalene-1,3-disulfonic acid

alkali

alkali

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

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

Conditions
ConditionsYield
at 160 - 180℃;
pyridine
110-86-1

pyridine

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

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

acetic anhydride
108-24-7

acetic anhydride

7-(acetylamino)-4-acetyloxynaphthalene-2-sulfonic acid pyridinium salt
1069138-84-6

7-(acetylamino)-4-acetyloxynaphthalene-2-sulfonic acid pyridinium salt

Conditions
ConditionsYield
at 20℃; for 16h;99%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

C20H13N3O8S2(2-)*2Na(1+)

C20H13N3O8S2(2-)*2Na(1+)

Conditions
ConditionsYield
Stage #1: 7-amino-4-hydroxy-2-naphthalenesulfonic acid With hydrogenchloride; sodium nitrite In water at 0 - 5℃; for 1h;
Stage #2: 7-amino-4-hydroxy-2-naphthalenesulfonic acid In water at 0 - 5℃; for 2h; pH=8 - 9;
93.2%
bis(trichloromethyl) carbonate
32315-10-9

bis(trichloromethyl) carbonate

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

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

AMI-1
134-47-4

AMI-1

Conditions
ConditionsYield
With sodium hydroxide at 60℃; for 6h; pH=7 - 8;90%
bis(trichloromethyl) carbonate
32315-10-9

bis(trichloromethyl) carbonate

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

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

4-hydroxy-7-{[(5-hydroxy-7-sulfo-(2-naphthyl))amino]carbonylamino}naphthalene-2-sulfonic acid

4-hydroxy-7-{[(5-hydroxy-7-sulfo-(2-naphthyl))amino]carbonylamino}naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sodium hydroxide; sodium acetate In tetrahydrofuran; water88%
With sodium acetate In tetrahydrofuran; sodium hydroxide; water
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

C7H5F2NO

C7H5F2NO

C17H11F2N3O5S

C17H11F2N3O5S

Conditions
ConditionsYield
Stage #1: C7H5F2NO With hydrogenchloride; sodium nitrite In water at 0 - 5℃;
Stage #2: 7-amino-4-hydroxy-2-naphthalenesulfonic acid With sodium carbonate In water at 0 - 5℃; for 0.666667h; pH=7.5 - 8.5;
85%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

diphenyl (4'-aminobiphenyl-4-ylamino)(pyridin-3-yl)methylphosphonate
1392848-70-2

diphenyl (4'-aminobiphenyl-4-ylamino)(pyridin-3-yl)methylphosphonate

7-amino-8-((4'-((diphenoxyphosphoryl)(pyridin-3-yl)methylamino)biphenyl-4-yl)diazenyl)-4-hydroxynaphthalene-2-sulfonic acid
1392848-75-7

7-amino-8-((4'-((diphenoxyphosphoryl)(pyridin-3-yl)methylamino)biphenyl-4-yl)diazenyl)-4-hydroxynaphthalene-2-sulfonic acid

Conditions
ConditionsYield
Stage #1: diphenyl (4'-aminobiphenyl-4-ylamino)(pyridin-3-yl)methylphosphonate With hydrogenchloride; sodium nitrite In water at 0℃;
Stage #2: 7-amino-4-hydroxy-2-naphthalenesulfonic acid With sodium hydroxide In water at 0℃; for 0.5h;
83%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

C8H8FNO2

C8H8FNO2

C18H14FN3O6S

C18H14FN3O6S

Conditions
ConditionsYield
Stage #1: C8H8FNO2 With hydrogenchloride; sodium nitrite In water at 0 - 5℃;
Stage #2: 7-amino-4-hydroxy-2-naphthalenesulfonic acid With sodium carbonate In water at 0 - 5℃; for 0.666667h; pH=7.5 - 8.5;
83%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

1-hydroxy-6-amino-3-naphthalenesulfonic 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

7-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-sulfonic acid

7-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-sulfonic acid

Conditions
ConditionsYield
With sodium carbonate; sodium chloride In water 1.) 0-5 deg C, 3 h; 2.) 60 deg C;79%
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%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

phenyl isothiocyanate
103-72-0

phenyl isothiocyanate

4-hydroxy-7-(N'-phenyl-thioureido)-naphthalene-2-sulfonic acid

4-hydroxy-7-(N'-phenyl-thioureido)-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sodium hydroxide In tetrahydrofuran at 20℃; for 12h;75%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

aniline
62-53-3

aniline

2-phenylamino-5-hydroxynaphthalene-7-sulphonic acid
119-40-4

2-phenylamino-5-hydroxynaphthalene-7-sulphonic acid

Conditions
ConditionsYield
With sodium metabisulfite at 100 - 110℃; pH=4-6; Reagent/catalyst;70.2%
With sodium disulfite
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

phenyl isocyanate
103-71-9

phenyl isocyanate

4-hydroxy-7-(3-phenyl-ureido)-naphthalene-2-sulfonic acid

4-hydroxy-7-(3-phenyl-ureido)-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sodium hydroxide In tetrahydrofuran at 20℃; for 24h;70%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

methylamine
74-89-5

methylamine

2-(N-methylamino)-5-hydroxynaphthalene-7-sulfonic acid
22346-43-6

2-(N-methylamino)-5-hydroxynaphthalene-7-sulfonic acid

Conditions
ConditionsYield
With sodium metabisulfite at 100 - 110℃; pH=7 - 8; Reagent/catalyst;68.5%
4-chloro-3-nitrophenyl hydroxyethyl sulfone

4-chloro-3-nitrophenyl hydroxyethyl sulfone

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

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

4-(5-hydroxy-7-sulfonaphth-2-yl)-amino-3-nitrophenyl hydroxyethyl sulfone

4-(5-hydroxy-7-sulfonaphth-2-yl)-amino-3-nitrophenyl hydroxyethyl sulfone

Conditions
ConditionsYield
In water60.6%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

4,4'-Diaminostilbene dihydrochloride

4,4'-Diaminostilbene dihydrochloride

C34H24N6O8S2(2-)*2Na(1+)

C34H24N6O8S2(2-)*2Na(1+)

Conditions
ConditionsYield
Stage #1: 4,4'-Diaminostilbene dihydrochloride diazotization;
Stage #2: 7-amino-4-hydroxy-2-naphthalenesulfonic acid
43%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

C6H3ClIN2(1+)*Cl(1-)
1608997-54-1

C6H3ClIN2(1+)*Cl(1-)

C22H12Cl2I2N5O4S(1-)*Na(1+)
1608997-57-4

C22H12Cl2I2N5O4S(1-)*Na(1+)

Conditions
ConditionsYield
With sodium hydroxide In water at 0℃; for 2h; pH=9;42%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

urea
57-13-6

urea

2-ureylen-di-N,N'-4-hydroxynaphthalene-2-sulphonic acid monosodium salt
71550-28-2

2-ureylen-di-N,N'-4-hydroxynaphthalene-2-sulphonic acid monosodium salt

Conditions
ConditionsYield
Stage #1: 7-amino-4-hydroxy-2-naphthalenesulfonic acid; urea In water at 100℃; for 16h; Inert atmosphere;
Stage #2: With hydrogenchloride In water at 100℃; for 17h; Inert atmosphere;
15%
1-hydroxy-6-amino-3-naphthalenesulfonic acid
87-02-5

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

2-Amino-5-nitrophenol
121-88-0

2-Amino-5-nitrophenol

C16H12N4O7S

C16H12N4O7S

Conditions
ConditionsYield
Stage #1: 5-Nitro-2-aminophenol With hydrogenchloride; sodium nitrite In water at 0 - 5℃; for 1h;
Stage #2: With aminosulfonic acid In water for 0.05h;
Stage #3: 7-amino-4-hydroxy-2-naphthalenesulfonic acid In water at 10℃; for 2h;
1.3%
carbon disulfide
75-15-0

carbon disulfide

6-amino-4-hydroxy-2-naphthalenesulfonic acid
90-51-7

6-amino-4-hydroxy-2-naphthalenesulfonic acid

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

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

4,4'-dihydroxy-6,7'-thioureylene-bis-naphthalene-2-sulfonic acid

4,4'-dihydroxy-6,7'-thioureylene-bis-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With ethanol; sodium carbonate; sulfur
carbon disulfide
75-15-0

carbon disulfide

1-amino-5-hydroxynaphthalene-7-sulphonic acid
489-78-1

1-amino-5-hydroxynaphthalene-7-sulphonic acid

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

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

4,4'-dihydroxy-7,8'-thioureylene-bis-naphthalene-2-sulfonic acid

4,4'-dihydroxy-7,8'-thioureylene-bis-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sodium carbonate; sulfur
carbon disulfide
75-15-0

carbon disulfide

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

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

4,4'-dihydroxy-7,7'-thioureylene-bis-naphthalene-2-sulfonic acid

4,4'-dihydroxy-7,7'-thioureylene-bis-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With ethanol; sodium carbonate; sulfur
phosgene
75-44-5

phosgene

6-amino-4-hydroxy-2-naphthalenesulfonic acid
90-51-7

6-amino-4-hydroxy-2-naphthalenesulfonic acid

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

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

4,4'-dihydroxy-6,7'-ureylene-bis-naphthalene-2-sulfonic acid

4,4'-dihydroxy-6,7'-ureylene-bis-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sodium carbonate
phosgene
75-44-5

phosgene

1-amino-5-hydroxynaphthalene-7-sulphonic acid
489-78-1

1-amino-5-hydroxynaphthalene-7-sulphonic acid

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

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

4,4'-dihydroxy-7,8'-ureylene-bis-naphthalene-2-sulfonic acid

4,4'-dihydroxy-7,8'-ureylene-bis-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With water; sodium carbonate
phosgene
75-44-5

phosgene

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

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

1-methyl-2,6-diaminobenzene-4-sulphonic acid
98-25-9

1-methyl-2,6-diaminobenzene-4-sulphonic acid

2,6-bis-[N'-(5-hydroxy-7-sulfo-[2]naphthyl)-ureido]-toluene-4-sulfonic acid

2,6-bis-[N'-(5-hydroxy-7-sulfo-[2]naphthyl)-ureido]-toluene-4-sulfonic acid

Conditions
ConditionsYield
With water; sodium carbonate
phosgene
75-44-5

phosgene

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

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

AMI-1
134-47-4

AMI-1

Conditions
ConditionsYield
With sodium carbonate
phosgene
75-44-5

phosgene

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

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

4-hydroxy-7-ureido-naphthalene-2-sulfonic acid
6421-85-8

4-hydroxy-7-ureido-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With ammonia; water; sodium carbonate at 40 - 50℃;
2-furancarbonyl chloride
527-69-5

2-furancarbonyl chloride

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

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

7-(furan-2-carbonylamino)-4-hydroxy-naphthalene-2-sulfonic acid
109258-06-2

7-(furan-2-carbonylamino)-4-hydroxy-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With diethyl ether; sodium acetate; sodium carbonate Reagens 4: Wasser;;
benzenediazonium
2684-02-8

benzenediazonium

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

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

7-amino-4-hydroxy-3-phenylazo-naphthalene-2-sulfonic acid
83006-40-0

7-amino-4-hydroxy-3-phenylazo-naphthalene-2-sulfonic acid

p-nitrobenzenediazonium
14368-49-1

p-nitrobenzenediazonium

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

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

7,8-diamino-4-hydroxy-naphthalene-2-sulfonic acid
88247-02-3

7,8-diamino-4-hydroxy-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With acetic acid Reduktion des entstandenen Monoazofarbstoffs mit Zinn und Salzsaeure;
thiophosgene
463-71-8

thiophosgene

6-amino-4-hydroxy-2-naphthalenesulfonic acid
90-51-7

6-amino-4-hydroxy-2-naphthalenesulfonic acid

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

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

4,4'-dihydroxy-6,7'-thioureylene-bis-naphthalene-2-sulfonic acid

4,4'-dihydroxy-6,7'-thioureylene-bis-naphthalene-2-sulfonic acid

Conditions
ConditionsYield
With sodium carbonate

Raw Materials

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