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Hebei Nengqian Chemical Import and Export Co., LTD

With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin

C.I.Vat Blue 35

Cas:84-40-2

Min.Order:1 Kilogram

FOB Price: $1.0 / 10.0

Type:Trading Company

inquiry

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

3H-Indol-3-one,5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- 84-40-2

Cas:84-40-2

Min.Order:1 Kilogram

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

3H-Indol-3-one,5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-

Cas:84-40-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

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

3H-Indol-3-one,5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-

Cas:84-40-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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

C.I.Vat Blue 35

Cas:84-40-2

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

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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

84-40-2 CAS NO.84-40-2

Cas:84-40-2

Min.Order:1 Metric Ton

FOB Price: $7.0 / 8.0

Type:Trading Company

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Henan Tianfu Chemical Co., Ltd.

Our advantage: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 Scientif

TIANFU-CHEM C.I.Vat Blue 35

Cas:84-40-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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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

3H-Indol-3-one,5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-

Cas:84-40-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Changchun Artel lmport and Export trade company

Supply top quality products with a reasonable price Application:api

84-40-2

Cas:84-40-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

3H-INDOL-3-ONE,5-BROMO-2-(5-BROMO-1,3-DIHYDRO-3-OXO-2H-INDOL-2-YLIDENE)-1,2-DIHYDRO-Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by expre

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

C.I.Vat Blue 35

Cas:84-40-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Chinqesen Biotechnology Co., Ltd.

Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen

84-40-2

Cas:84-40-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

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

C.I.Vat Blue 35

Cas:84-40-2

Min.Order:0

Negotiable

Type:Trading Company

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Jilin haofei import and export trade Co.,Ltd

Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right

84-40-2 CAS NO.84-40-2

Cas:84-40-2

Min.Order:0

Negotiable

Type:Trading Company

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Nanjing Raymon Biotech Co., Ltd.

3H-Indol-3-one,5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-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/Pharma

Synova( Tianjin ) Chemical Technology Co,.Ltd

The company have effective management team, professional technical R & D personnel, the service spirit of customer oriented. We have long-term cooperation with famous domestic manufacturer, and excellent customer resources overseas. We are skilled in

C.I.Vat Blue 35

Cas:84-40-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Skyrun Industrial Co.,Ltd

Supplement, prompt shipment, high purity Application:powder material

CSR201608-3325

Cas:84-40-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Zhaojun New Material Technology Co., LTD

1.Fast and safety delivery by well-reputed shipping line;2.we have our own chemical laboratory and factory3.Reasonable price, excellent quality and attentive service.4.prompt reply.we can reply your inquiry within 12 hours.5.sample free(depends on pr

Synthetic route

5-bromo-3-indoxyl acetate
17357-14-1

5-bromo-3-indoxyl acetate

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

nitromethane
75-52-5

nitromethane

5-bromo-2-nitrobenzaldehyde
20357-20-4

5-bromo-2-nitrobenzaldehyde

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
Stage #1: nitromethane; 5-bromo-2-nitrobenzaldehyde With sodium methylate In methanol
Stage #2: With sodium sulfate; sodium hydroxide In water
56%
5-bromo-2-<(carboxymethyl)amino>-benzoic acid
32253-75-1

5-bromo-2-<(carboxymethyl)amino>-benzoic acid

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With sodium acetate; acetic anhydride Verseifen des Reaktionsprodukts und nachfolgende Oxydation mit Luft;
1-(2-amino-5-bromophenyl)ethanone
29124-56-9

1-(2-amino-5-bromophenyl)ethanone

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With quinoline; sulfur
1-(2-amino-5-bromo-phenyl)-2,2-dibromo-ethanone

1-(2-amino-5-bromo-phenyl)-2,2-dibromo-ethanone

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With sodium hydroxide Schuetteln der erhaltenen Loesung mit Luft;
2-(ethoxycarbonylmethyl-nitroso-amino)-5-bromo-benzoic acid ethyl ester

2-(ethoxycarbonylmethyl-nitroso-amino)-5-bromo-benzoic acid ethyl ester

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With potassium hydroxide Behandeln des Reaktionsprodukts im Wasser mit Luft;
5-bromo-2-nitrobenzaldehyde
20357-20-4

5-bromo-2-nitrobenzaldehyde

acetone
67-64-1

acetone

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With sodium hydroxide
With sodium hydroxide
With sodium hydroxide In water
1H,1H'-2,2'-Biindolylidene-3,3'-dione
482-89-3

1H,1H'-2,2'-Biindolylidene-3,3'-dione

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With bromine
5.5'-dibromo-dehydroindigo diacetate

5.5'-dibromo-dehydroindigo diacetate

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
durch Reduktion;
5-bromo-isatin chloride

5-bromo-isatin chloride

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With hydrogen iodide; sulphurous acid; acetic acid
<5-bromo-2-nitro-α-oxy-benzyl>-acetone

<5-bromo-2-nitro-α-oxy-benzyl>-acetone

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With alkali
1H,1H'-2,2'-Biindolylidene-3,3'-dione
482-89-3

1H,1H'-2,2'-Biindolylidene-3,3'-dione

bromo-starch

bromo-starch

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

compound of 5-bromo-2-nitro-phenyllactic acid aldehyde with acetaldehyde

compound of 5-bromo-2-nitro-phenyllactic acid aldehyde with acetaldehyde

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With alkali
5.5'-dibromo-3.3'-dioxo-diindolinyl-(2.2')-disulfonic acid-(2.2')(?)

5.5'-dibromo-3.3'-dioxo-diindolinyl-(2.2')-disulfonic acid-(2.2')(?)

A

5-Bromo-1H-indole-2,3-dione
87-48-9

5-Bromo-1H-indole-2,3-dione

B

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
With hydrogenchloride
N-(4-bromo-2-(2,2-dibromoacetyl)phenyl)acetamide
85976-21-2

N-(4-bromo-2-(2,2-dibromoacetyl)phenyl)acetamide

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: alcohol; water; hydrobromic acid / man faellt mit Wasser
2: diluted NaOH-solution / Schuetteln der erhaltenen Loesung mit Luft
View Scheme

5-bromo-1H-indole

5-bromo-1H-indole

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

N,N’-di-Boc-5,5’-dibromoindigo

N,N’-di-Boc-5,5’-dibromoindigo

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
UV-irradiation;
3-iodo-5-bromo-1H-indole

3-iodo-5-bromo-1H-indole

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: acetic acid / 1 h / 90 °C
2: sodium hydroxide / water; ethanol / 2 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: acetic acid / 1 h / 90 °C
2: sodium hydroxide / ethanol / 2 h / 20 °C
View Scheme
5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

5-Bromo-2-aminobenzoic acid
5794-88-7

5-Bromo-2-aminobenzoic acid

Conditions
ConditionsYield
Stage #1: 5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione With bromamine B; sodium hydroxide; palladium dichloride In water; acetonitrile at 60℃; for 3.66667h; pH=12;
Stage #2: In water Acidic conditions;
95%
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

N,N’-di-Boc-5,5’-dibromoindigo

N,N’-di-Boc-5,5’-dibromoindigo

Conditions
ConditionsYield
With dmap; triethylamine In tetrahydrofuran at 20℃;94%
With dmap at 20℃; for 72h; Darkness;45.6%
sulfuric acid
7664-93-9

sulfuric acid

bromine
7726-95-6

bromine

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

4.5.7.4'.5'.7'-hexabromo-indigo perbromide

4.5.7.4'.5'.7'-hexabromo-indigo perbromide

bromine
7726-95-6

bromine

iodine
7553-56-2

iodine

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

4.5.7.4'.5'.7'-hexabromo-indigo perbromide

4.5.7.4'.5'.7'-hexabromo-indigo perbromide

bromine
7726-95-6

bromine

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

4.5.7.5'.7'-pentabromo-indigo perbromide

4.5.7.5'.7'-pentabromo-indigo perbromide

Conditions
ConditionsYield
at 100 - 120℃;
chlorosulfonic acid
7790-94-5

chlorosulfonic acid

bromine
7726-95-6

bromine

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

4.5.7.5'.7'-pentabromo-indigo perbromide

4.5.7.5'.7'-pentabromo-indigo perbromide

4.5.7.5'.7'-pentabromo-indigo perbromide

4.5.7.5'.7'-pentabromo-indigo perbromide

acetic acid
64-19-7

acetic acid

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

permanganate

permanganate

5.5'-dibromo-2.2'-diacetoxy-3.3'-dioxo-diindolinyl-(2.2')

5.5'-dibromo-2.2'-diacetoxy-3.3'-dioxo-diindolinyl-(2.2')

sulfuric acid
7664-93-9

sulfuric acid

nitric acid
7697-37-2

nitric acid

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

5.5'-dibromo-7.7'-dinitro-indigo

5.5'-dibromo-7.7'-dinitro-indigo

sulfite(2-)
14265-45-3

sulfite(2-)

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

lead electrodes

lead electrodes

5.5'-dibromo-leuco indigo

5.5'-dibromo-leuco indigo

Conditions
ConditionsYield
at 70℃; Electrolysis;
bromine
7726-95-6

bromine

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

5.7.5'.7'-tetrabromo-indigo dibromide

5.7.5'.7'-tetrabromo-indigo dibromide

Conditions
ConditionsYield
at 40 - 60℃;
sulfuric acid
7664-93-9

sulfuric acid

bromine
7726-95-6

bromine

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

5.7.5'.7'-tetrabromo-indigo dibromide

5.7.5'.7'-tetrabromo-indigo dibromide

Conditions
ConditionsYield
at 45℃;
5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

potassium permanganate

potassium permanganate

dibromo-anhydro-isatin-α-anthranilide

dibromo-anhydro-isatin-α-anthranilide

chlorine
7782-50-5

chlorine

acetic acid
64-19-7

acetic acid

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

A

monochloro-5.5'-dibromo-dihydroindigo

monochloro-5.5'-dibromo-dihydroindigo

B

dichloro-5.5'-dibromo-dehydroindigo

dichloro-5.5'-dibromo-dehydroindigo

sulfuryl dichloride
7791-25-5

sulfuryl dichloride

chlorine
7782-50-5

chlorine

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione
84-40-2

5,5'-dibromo-1H,1'H-[2,2']biindolylidene-3,3'-dione

monochlorodibromoindigo

monochlorodibromoindigo

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