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inquiryOur Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con
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Product Name: 5,6-DIHYDROXYINDOLE Synonyms: INDOLE-5,6-DIOL;DOPAMINE LUTINE;5,6-DIHYDROXYINDOLE;DIHYDROXYINDOLE;5,6-Dihydroxy-1H-indole;1H-indole-5,6-diol;5,6-DIYDROXYINDOLE;5.6-Dihydroxy Indol CAS: 3131-52-0 MF: C8H7NO2 MW: 149.15 EIN
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inquiryFactory direct sales, accept customization. 5,6-Dihydroxyindole is an intermediate in melanogenesis, the production of melanin which is found in our skin, eyes, hair, and inner ear. Kind Pharma has its own laboratory, we can do analytical testing f
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inquiryManufacturer Supply High Quality 5,6-DIHYDROXYINDOLE CAS 3131-52-0 Item Standard Identification A.H-NMR:Comply with the structure B.LC-MS:Comply with the structure
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inquiryProName: 5,6-Dihydroxyindole CasNo: 3131-52-0 Molecular Formula: C8H7NO2 Appearance: detailed see specifications Application: It is an important raw material and in... DeliveryTime: prompt PackAge: according to the clients requirement Port:
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inquiryEstablished 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
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inquiryTianfu Chemical, built in 2009, is a professional supplier for API materials in China. With 10 years development, we have bulit our own factory and lab to produce a certain of products. And we have established stable business relationship
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inquiryProduct name: 5,6-dihydroxyindole CAS No.:3131-52-0 Molecule Formula: C8H7NO2 Molecule Weight:149.14 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:Enterprise Standard TESTING ITEMS
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inquiryOur 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
Conditions | Yield |
---|---|
With hydrogenchloride for 18h; Heating; | 100% |
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With sodium dithionite-hydrate; sodium hydrogencarbonate In water at 20 - 58℃; for 1h; Inert atmosphere; | 98.1% |
Conditions | Yield |
---|---|
With Pd(0)EnCat; ammonium formate In N,N-dimethyl-formamide at 80℃; for 0.166667h; Irradiation; microwave; | 95% |
5,6-diacetoxyindole
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With potassium carbonate In methanol for 0.583333h; | 90% |
With methanol; sodium hydroxide; water at 0℃; Reagens 4: Natriumdithionit; | |
With sodium hydroxide In ethanol |
dopachrome
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With sodium L-ascorbate In water at 20℃; for 0.75h; Product distribution / selectivity; | 90% |
With sodium chloride In water at 20℃; for 0.75h; Product distribution / selectivity; |
5,6-dimethoxyindole
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With hydrogenchloride; acetic acid In water Reagent/catalyst; Solvent; Reflux; | 85.7% |
fumaric acid disodium salt
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With sodium hydroxide; palladium-carbon In water | 76.5% |
(E)-4,5-dihydroxy-2,β-dinitrostyrene
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With hydrogen; palladium on activated charcoal In methanol under 2585.7 Torr; for 1h; | 76% |
With sodium dithionite; phosphate buffer; zinc(II) sulfate In various solvent(s) at 40℃; for 0.333333h; | 52% |
With hydrogen; palladium on activated charcoal In water under 2585.7 Torr; for 0.75h; | 50% |
Conditions | Yield |
---|---|
With sodium hydroxide In water | 56% |
5,6-diacetoxy-2,3-dihydro-indole
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With potassium carbonate In methanol at 0℃; for 0.833333h; Inert atmosphere; | 54% |
Conditions | Yield |
---|---|
With H2; palladium-carbon In water | 50% |
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; potassium hexacyanoferrate(III) In water for 2.5h; | 45% |
With sodium hydrogencarbonate; potassium hexacyanoferrate(III) In water at 20℃; for 3h; Inert atmosphere; | 27% |
Multi-step reaction with 2 steps 1: 59 percent / air, phosphate buffer pH 7.0 / 2.5 h / 25 °C / mushroom tyrosinase 2: 100 percent / 6 M HCl / 18 h / Heating View Scheme |
Conditions | Yield |
---|---|
With hydrogenchloride In benzene | 40% |
6-aminodopamine dihydrochloride
A
1H-indole-5,6-diol
B
7-amino-8-(2-aminoethyl)-3-hydroxy-2-oxo-2,3,4,10-tetrahydro<3,4-a>iminoethanophenoxazine
Conditions | Yield |
---|---|
With air; sodium hydrogencarbonate | A 20% B n/a |
With air; sodium hydrogencarbonate Product distribution; Mechanism; other reagents; | A 20% B n/a |
5,6-(carbonyldioxy)indole
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With water at 100℃; for 1h; | 15% |
α-methyldopamine
A
1H-indole-5,6-diol
B
1-(2,4,5-trihydroxyphenyl)-2-aminopropane
Conditions | Yield |
---|---|
With dihydrogen peroxide; horseradish peroxidase; sodium nitrite In phosphate buffer at 37℃; pH=7.4; Product distribution; Kinetics; Further Variations:; pH-values; Reagents; | A n/a B 7.2% C 1.7% |
1-(2-amino-4,5-dihydroxyphenyl)-2-ethylamine
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With water; sodium hydrogencarbonate mit Luft; |
Conditions | Yield |
---|---|
With water; sodium hydrogencarbonate; potassium hexacyanoferrate(III) |
Conditions | Yield |
---|---|
In water-d2 at 24.9℃; for 0.583333h; Rate constant; Mechanism; Irradiation; other sensitizers: methylene blue, rose bengal, fluoresceine; other solvent: H2O.; | |
With Aβ40 In aq. acetate buffer at 37℃; for 1h; pH=7.4; Reagent/catalyst; pH-value; |
glutathion
A
1H-indole-5,6-diol
B
4-S-glutathionyl-5,6-dihydroxyindole
Conditions | Yield |
---|---|
0.025 M sodium phosphate buffer, pH=6.8; | A 75 % Chromat. B 10 % Chromat. |
A 75 % Chromat. B 10 % Chromat. |
Conditions | Yield |
---|---|
With hydrogenchloride for 18h; Heating; | 100% |
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With sodium dithionite-hydrate; sodium hydrogencarbonate In water at 20 - 58℃; for 1h; Inert atmosphere; | 98.1% |
Conditions | Yield |
---|---|
With Pd(0)EnCat; ammonium formate In N,N-dimethyl-formamide at 80℃; for 0.166667h; Irradiation; microwave; | 95% |
5,6-diacetoxyindole
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With potassium carbonate In methanol for 0.583333h; | 90% |
With methanol; sodium hydroxide; water at 0℃; Reagens 4: Natriumdithionit; | |
With sodium hydroxide In ethanol |
dopachrome
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With sodium L-ascorbate In water at 20℃; for 0.75h; Product distribution / selectivity; | 90% |
With sodium chloride In water at 20℃; for 0.75h; Product distribution / selectivity; |
5,6-dimethoxyindole
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With hydrogenchloride; acetic acid In water Reagent/catalyst; Solvent; Reflux; | 85.7% |
fumaric acid disodium salt
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With sodium hydroxide; palladium-carbon In water | 76.5% |
(E)-4,5-dihydroxy-2,β-dinitrostyrene
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With hydrogen; palladium on activated charcoal In methanol under 2585.7 Torr; for 1h; | 76% |
With sodium dithionite; phosphate buffer; zinc(II) sulfate In various solvent(s) at 40℃; for 0.333333h; | 52% |
With hydrogen; palladium on activated charcoal In water under 2585.7 Torr; for 0.75h; | 50% |
Conditions | Yield |
---|---|
With sodium hydroxide In water | 56% |
5,6-diacetoxy-2,3-dihydro-indole
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With potassium carbonate In methanol at 0℃; for 0.833333h; Inert atmosphere; | 54% |
Conditions | Yield |
---|---|
With H2; palladium-carbon In water | 50% |
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; potassium hexacyanoferrate(III) In water for 2.5h; | 45% |
With sodium hydrogencarbonate; potassium hexacyanoferrate(III) In water at 20℃; for 3h; Inert atmosphere; | 27% |
Multi-step reaction with 2 steps 1: 59 percent / air, phosphate buffer pH 7.0 / 2.5 h / 25 °C / mushroom tyrosinase 2: 100 percent / 6 M HCl / 18 h / Heating View Scheme |
Conditions | Yield |
---|---|
With hydrogenchloride In benzene | 40% |
6-aminodopamine dihydrochloride
A
1H-indole-5,6-diol
B
7-amino-8-(2-aminoethyl)-3-hydroxy-2-oxo-2,3,4,10-tetrahydro<3,4-a>iminoethanophenoxazine
Conditions | Yield |
---|---|
With air; sodium hydrogencarbonate | A 20% B n/a |
With air; sodium hydrogencarbonate Product distribution; Mechanism; other reagents; | A 20% B n/a |
5,6-(carbonyldioxy)indole
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With water at 100℃; for 1h; | 15% |
α-methyldopamine
A
1H-indole-5,6-diol
B
1-(2,4,5-trihydroxyphenyl)-2-aminopropane
Conditions | Yield |
---|---|
With dihydrogen peroxide; horseradish peroxidase; sodium nitrite In phosphate buffer at 37℃; pH=7.4; Product distribution; Kinetics; Further Variations:; pH-values; Reagents; | A n/a B 7.2% C 1.7% |
1-(2-amino-4,5-dihydroxyphenyl)-2-ethylamine
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With water; sodium hydrogencarbonate mit Luft; |
Conditions | Yield |
---|---|
With water; sodium hydrogencarbonate; potassium hexacyanoferrate(III) |
Conditions | Yield |
---|---|
In water-d2 at 24.9℃; for 0.583333h; Rate constant; Mechanism; Irradiation; other sensitizers: methylene blue, rose bengal, fluoresceine; other solvent: H2O.; | |
With Aβ40 In aq. acetate buffer at 37℃; for 1h; pH=7.4; Reagent/catalyst; pH-value; |
glutathion
A
1H-indole-5,6-diol
B
4-S-glutathionyl-5,6-dihydroxyindole
Conditions | Yield |
---|---|
0.025 M sodium phosphate buffer, pH=6.8; | A 75 % Chromat. B 10 % Chromat. |
A 75 % Chromat. B 10 % Chromat. |
L-tyrosine
A
indole
B
1H-indole-5,6-diol
C
4,4'-Dihydroxybiphenyl
D
4-Hydroxyphenylpyruvic acid
E
5,6,3-trihydroxyindole
F
anthranilic acid
Conditions | Yield |
---|---|
With ethylenediaminetetraacetic acid; oxygen; iron(II) sulfate; ascorbic acid In water at 30 - 32℃; for 2h; Product distribution; biomimetic hydroxylation, pH 6.7; |
L-tyrosine
A
1H-indole-5,6-diol
B
levodopa
C
leucodopachromene
D
(2S)-dopachrome
Conditions | Yield |
---|---|
With water; mushroom tyrosinase Rate constant; phosphat buffer, ph 6.8; |
Dopachrome
1H-indole-5,6-diol
Conditions | Yield |
---|---|
Rate constant; | |
With phosphate buffer at 30℃; Mechanism; Rate constant; | 96 % Chromat. |
Conditions | Yield |
---|---|
With zinc diacetate In various solvent(s) Mechanism; Product distribution; Ambient temperature; rearrengament time; | A 91 % Chromat. B 2 % Chromat. |
L-Tryptophan
A
indole
B
1H-indole-5,6-diol
C
4,4'-Dihydroxybiphenyl
D
4-Hydroxyphenylpyruvic acid
E
5,6,3-trihydroxyindole
F
anthranilic acid
Conditions | Yield |
---|---|
With ethylenediaminetetraacetic acid; oxygen; iron(II) sulfate; ascorbic acid In water at 30 - 32℃; for 2h; Product distribution; biomimetic hydroxylation, pH 6.7; |
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With air; tyrosine ase from meal worms at 26 - 30℃; pH 6-6.5; |
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With air; tyrosine ase from meal worms at 26 - 30℃; pH 6-6.5; |
indole
A
1H-indole-5,6-diol
B
indole-2,3-dione
C
anthranilic acid
E
3-hydroxyanthranilic acid
Conditions | Yield |
---|---|
With phosphate buffer; ethylenediaminetetraacetic acid; iron(II) sulfate; ascorbic acid In water; acetone at 37℃; for 2h; Product distribution; melanin formation under Udenfriend condition, oxygen atmosphere; |
(2S)-dopachrome
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With potassium aluminum sulfate; HAc-NaAc buffer at 15℃; Kinetics; |
1H-indole-5,6-diol
Conditions | Yield |
---|---|
With N,O-bis-(trimethylsilyl)-acetamide In dichloromethane | 71% |
1H-indole-5,6-diol
N,O-bis-(trimethylsilyl)-acetamide
Conditions | Yield |
---|---|
In dichloromethane | 71% |
1H-indole-5,6-diol
di(1H-imidazol-2-yl)methanethione
5,6-thiocarbonyldioxy indole
Conditions | Yield |
---|---|
In water; Ethyl propionate; acetone; toluene | 63% |
In di-isopropyl ether; water; acetone; toluene | 63% |
Conditions | Yield |
---|---|
With mushroom tyrosinase for 2h; 0.025 M phosphate buffer; | 48% |
1H-indole-5,6-diol
[1,4]naphthoquinone
2-(5,6-Dihydroxy-1H-indol-3-yl)-[1,4]naphthoquinone
Conditions | Yield |
---|---|
In acetic acid at 5℃; | 42% |
Conditions | Yield |
---|---|
With phosphate buffer In water for 24h; pH=7.4; | 40% |
Conditions | Yield |
---|---|
Stage #1: 1H-indole-5,6-diol With ammonium persulfate; phosphoric acid In water pH=1.4; Oxidation; Stage #2: acetic anhydride With pyridine Acetylation; | A 29% B 19% |
Conditions | Yield |
---|---|
Stage #1: 1H-indole-5,6-diol With ammonium persulfate; phosphoric acid In water pH=1.4; Oxidation; Stage #2: acetic anhydride With pyridine Acetylation; | A 26% B 24% |
1H-indole-5,6-diol
acetic anhydride
A
5,5',6,6'-tetraacetoxy-2,7'-biindolyl
B
5,5',6,6'-tetraacetoxy-2,4'-biindolyl
Conditions | Yield |
---|---|
Stage #1: 1H-indole-5,6-diol With dihydrogen peroxide; horseradish peroxidase In phosphate buffer for 0.00694444h; pH=7.0; Stage #2: acetic anhydride In pyridine at 20℃; | A 10% B 15% |
Stage #1: 1H-indole-5,6-diol With dihydrogen peroxide; horseradish peroxidase In phosphate buffer; acetone pH=7.0; Stage #2: acetic anhydride In pyridine at 20℃; | A 13% B 4% |
Conditions | Yield |
---|---|
With phosphate buffer pH 7.0; mushroom tyrosinase for 0.833333h; Product distribution; Mechanism; other melanin precursor; | A 4% B 5% C 2% D 9% |
With phosphate buffer pH 7.0; mushroom tyrosinase for 0.833333h; | A 4% B 5% C 2% D 9% |
Conditions | Yield |
---|---|
Stage #1: 1H-indole-5,6-diol With ammonium persulfate; phosphoric acid In water for 0.000277778h; pH=1.4; Oxidation; Stage #2: acetic anhydride With pyridine Acetylation; | A 9% B 5% |
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