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inquiryMaltol is a naturally occurring organic compound that is primarily used as flavor enhancer. Chemical formula: C6H6O3 Molecular weight: 126.11 g/mol Code GBI1108-Code of additives under the standard of P.R.C INS636-International code system FE
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inquiryProduct description: Product name 3-Hydroxy-2-methyl-4-pyrone CAS number 118-71-8 Assay ≥99.5% Appearance White crystalline powder Capacity 500mt/year Application Food addit
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inquiryMaltol CAS No.:118-71-8 Name: Maltol Synonyms: 3-Hydroxy-2-methyl-4-pyrone; 3-Hydroxy-2-methyl-4H-pyran-4-one Molecular Structure:
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About Product Technical Details 3-Hydroxy-2-methyl-4H-pyran-4-one Chemical Properties Melting point 160-164 °C(lit.) Boiling point 205 °C density 1.046 g/mL at 25 &de
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inquiryProduct Name: 3-Hydroxy-2-methyl-4H-pyran-4-one Synonyms: Pantoprazole Sodium Impurity X;2-Methyl-3-hydroxy-.gamma.-pyranone;2-Methyl-3-hydroxy-4-pyrone;2-Methyl-3-hydroxy-gamma.-pyranone;2-Methyl-3-hydroxypyrone;2-Methyl-3-oxy-gamma-pyrone;2-Meth
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inquiryWith 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
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inquiryWITH 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
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inquiryProduct Maltol CAS NO. 118-71-8 EINECS NO. 204-271-8 FEMA
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inquiryPacking: According to customer requirements Delivery time: In stock or depands Port of shipment: Ningbo/Shanghai/Qingdao OEM/ODM:Welcome Sample:We can offer our existing samples at once Appearance:white powder/ Refer to COA Storage:Refer to COA
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inquiry3-Hydroxy-2-methyl-4H-pyran-4-one CAS:118-71-8 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 o
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inquiryMinimum 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,
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inquiry1,we produce and sell good chemicals around the world. 2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%. 3,our staff consists of highly qualifie
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inquiry3-Hydroxy-2-methyl-4H-pyran-4-one CAS: 118-71-8 Specification Product name 3-Hydroxy-2-methyl-4-pyrone CAS number 118-71-8 Assay ≥99.5% Appearance White crystalline powder Capacity 500m
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inquiryConditions | Yield |
---|---|
With sodium sulfate In water at 26℃; for 3h; Temperature; Time; Concentration; | A 88.5% B 99.8% |
C15H26O3Si
Maltol
Conditions | Yield |
---|---|
With potassium acetate In water; N,N-dimethyl-formamide at 25℃; for 20h; | 92% |
3-((tert-butyldimethylsilyl)oxy)-2-methyl-4H-pyran-4-one
Maltol
Conditions | Yield |
---|---|
With lithium acetate In water; N,N-dimethyl-formamide at 25℃; for 8h; Inert atmosphere; | 90% |
Maltol
Conditions | Yield |
---|---|
With sodium hydroxide In water at -5 - 30℃; pH=2 - 3; | 80.5% |
Conditions | Yield |
---|---|
With tert-butylhypochlorite In acetic acid 1.) 25 deg C, 2 h, 2.) 90 deg C, 4 h; | 75% |
With chlorine In methanol; water 1.) -5 deg C; 2.) 90-95 deg C, 3.5 h; | 71% |
With chlorine In methanol; water at 90 - 95℃; for 3.5h; Rearrangement; | 71% |
4,6-dimethoxy-2-methyl-2H-pyran-3(6H)-one
Maltol
Conditions | Yield |
---|---|
With sulfuric acid at 25℃; for 0.333333h; | 74% |
2-(1-hydroxyethyl)-2,3,5-trimethoxy-2,5-dihydrofuran
Maltol
Conditions | Yield |
---|---|
With sulfuric acid at 25℃; for 4h; | 67% |
In sulfuric acid | 67% |
Multi-step reaction with 2 steps 1: 77 percent / formic acid / methanol / 0.17 h / 20 °C 2: 74 percent / 2M aq. H2SO4 / 0.33 h / 25 °C View Scheme |
trans-4-chloro-6-methoxy-2-methyl-2H-pyran-3(6H)-one
Maltol
Conditions | Yield |
---|---|
With acetic acid for 1.5h; Heating; | 66% |
4-chloro-6-methoxy-2-methyl-2H-pyran-3(6H)-one
Maltol
Conditions | Yield |
---|---|
With acetic acid | 65% |
6-methoxy-2-methyl-2H-pyran-3(6H)-one
Maltol
Conditions | Yield |
---|---|
With chlorine In acetic acid 1.) 10 deg C, 30 min; 2.) reflux 1.5 h; | 56% |
With sodium hydroxide; chlorine In water; acetic acid | 56% |
Multi-step reaction with 2 steps 1: Cl2, triethylamine / CH2Cl2 / 1.) -10 deg C, 30 min; 2.) 10 deg C, 25 min 2: 66 percent / acetic acid / 1.5 h / Heating View Scheme |
Conditions | Yield |
---|---|
With sodium bromide; chlorine In tetrahydrofuran; water | A 55% B n/a |
4-bromo-6-hydroxy-2-methyl-2H-pyran-3(6H)-one
Maltol
Conditions | Yield |
---|---|
In phosphoric acid | 34% |
6-ethoxy-4,5-epoxy-3-oxo-2-methyltetrahydropyran
Maltol
Conditions | Yield |
---|---|
In water | 9.5% |
Conditions | Yield |
---|---|
With sodium hydroxide In ethanol for 1h; Ambient temperature; | 60 mg |
3-(β-D-glucopyranosyloxy)-2-methyl-4H-pyran-4-one
Maltol
Conditions | Yield |
---|---|
With hydrogenchloride | 6 mg |
With almond β-glucosidase at 37℃; for 1h; pH=7.5; aq. buffer; Enzymatic reaction; |
Conditions | Yield |
---|---|
With hydrogenchloride for 1h; Heating; |
Conditions | Yield |
---|---|
With sodium hydroxide In methanol; water at 4℃; | A 4.4 mg B 57.4 mg |
4-(α-D-glocopyranosyloxy)-2-hydroxy-2-methyl-2H-pyran-3(6H)-one
A
Maltol
B
β-D-glucose
Conditions | Yield |
---|---|
enzymic hydrolysis; |
1-(N-L-triptophanyl)-1-deoxy-D-fructose
A
5-hydroxymethyl-2-furfuraldehyde
B
Maltol
C
isomaltol
D
α-carboline
E
L-Tryptophan
Conditions | Yield |
---|---|
In water at 95℃; under 750.06 - 450036 Torr; Rate constant; Product distribution; various pressure; ΔV*; |
thymidine diphosphate 4-keto-6-deoxy-α-D-glucose
Maltol
Conditions | Yield |
---|---|
With potassium phosphate buffer for 0.333333h; pH=3.6; Decomposition; |
Conditions | Yield |
---|---|
With air at 400 - 450℃; Oxidation; Formation of xenobiotics; |
Maltol
Conditions | Yield |
---|---|
Decomposition; Formation of xenobiotics; pyrolysis; |
Maltol
Conditions | Yield |
---|---|
With lithium perchlorate; potassium carbonate In acetonitrile for 1.5h; Electrolysis; Hg cathode, Pt anode, -1.0 V (vs SCE); |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 75 percent / NaHCO3, Br2 / methanol / 1.) -30 deg C; 2.) room temp., 2 h 2: 100 percent / NaBH4 / methanol / 15 - 25 °C 3: 67 percent / H2SO4 / 4 h / 25 °C View Scheme | |
Multi-step reaction with 4 steps 1: 75 percent / NaHCO3, Br2 / methanol / 1.) -30 deg C; 2.) room temp., 2 h 2: 100 percent / NaBH4 / methanol / 15 - 25 °C 3: 77 percent / formic acid / methanol / 0.17 h / 20 °C 4: 74 percent / 2M aq. H2SO4 / 0.33 h / 25 °C View Scheme |
2-acetyl-2,3,5-trimethoxy-2,5-dihydrofuran
Maltol
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 100 percent / NaBH4 / methanol / 15 - 25 °C 2: 67 percent / H2SO4 / 4 h / 25 °C View Scheme | |
Multi-step reaction with 3 steps 1: 100 percent / NaBH4 / methanol / 15 - 25 °C 2: 77 percent / formic acid / methanol / 0.17 h / 20 °C 3: 74 percent / 2M aq. H2SO4 / 0.33 h / 25 °C View Scheme |
2-methoxy-3,4-dichloro-6-methyl tetrahydropyran-5-one
Maltol
Conditions | Yield |
---|---|
With sodium hydroxide In sulfuric acid |
Conditions | Yield |
---|---|
In tetrahydrofuran; BrCl; water |
Conditions | Yield |
---|---|
In tetrahydrofuran; water; chlorine |
Maltol
Conditions | Yield |
---|---|
With chlorine In methanol; water |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 1.25h; Inert atmosphere; | 100% |
Stage #1: Maltol; benzyl bromide In N,N-dimethyl-formamide at 80℃; for 0.25h; Stage #2: With potassium carbonate In N,N-dimethyl-formamide for 1h; | 100% |
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 2h; | 100% |
Conditions | Yield |
---|---|
With potassium carbonate In acetonitrile for 5h; Reflux; | 99.4% |
With potassium carbonate In methanol for 1h; Reflux; | 98% |
With sodium hydroxide In methanol Heating / reflux; | 95% |
Conditions | Yield |
---|---|
With potassium carbonate In acetone for 3h; Reflux; | 99.4% |
With potassium carbonate In acetone for 6h; Reflux; | 99% |
With potassium carbonate In acetone for 3h; Reflux; | 99.4% |
Maltol
tert-butyldimethylsilyl chloride
3-((tert-butyldimethylsilyl)oxy)-2-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
With dmap; triethylamine In dichloromethane at 0℃; Inert atmosphere; | 99% |
With 1H-imidazole In dichloromethane at 23℃; for 2h; Inert atmosphere; | 99% |
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; Inert atmosphere; | 98% |
Conditions | Yield |
---|---|
In dichloromethane suspn. Ru colmplex and maltol in CH2Cl2 was refluxed for 4 h; soln. was kept at -15°C for 7 days, ppt. was filtered off, washedwith n-hexane and dried in vacuo; elem. anal.; | 99% |
Conditions | Yield |
---|---|
With 1H-imidazole In dichloromethane at 23℃; for 1.5h; Inert atmosphere; | 99% |
Conditions | Yield |
---|---|
With potassium carbonate In acetone for 12h; Reflux; | 99% |
With potassium carbonate In acetone for 6h; Reflux; | 97% |
With potassium carbonate In N,N-dimethyl-formamide at 60℃; for 5h; | 65% |
Conditions | Yield |
---|---|
With potassium carbonate In acetone for 6h; Reflux; | 99% |
Conditions | Yield |
---|---|
at 90℃; for 6h; | 98% |
With acetic acid at 80℃; for 18h; Inert atmosphere; | 84% |
With sodium acetate In chloroform at 125℃; under 2250.2 Torr; for 0.25h; Irradiation; | 75% |
at 80℃; for 6h; |
Maltol
Conditions | Yield |
---|---|
With (C2H5)3N In methanol; dichloromethane (C2H5)3N added to a soln. of Co complex, a soln. of ligand in MeOH added, stirred at room temp. under N2; evapd. (vac.), dissolved in C6H6, filtered, crystd. by diffusion of the soln. with pentane; elem. anal.; | 98% |
Maltol
vanadium(V) oxytriisopropoxide
(malt)2V(V)(O)(O(i)Pr)
Conditions | Yield |
---|---|
In acetonitrile at -20 - 20℃; | 98% |
Conditions | Yield |
---|---|
In ethanol at 100℃; for 6h; Temperature; | 97.02% |
Conditions | Yield |
---|---|
With triethylamine In ethanol; triethylamine; acetonitrile byproducts: NEt3*HNO3; a soln. of γ-pyranone in Et3N and EtOH were added dropwise under N2 to a soln. of AgNO3 in MeCN-EtOH in the dark at 25°C, the mixt.was stirred for 2 h; filtd., ppt. was washed with cold EtOH, filtrate evapd. under vac.; elem. anal.; | 97% |
Conditions | Yield |
---|---|
In methanol at 64℃; for 1h; | 97% |
Maltol
salicylic acid
3-hydroxy-2-methyl-4-pyrone/salicylic acid 1:1 cocrystals
Conditions | Yield |
---|---|
In methanol at 64℃; for 1h; | 97% |
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 0.166667h; | 97% |
Maltol
oxotribromobis(triphenylphosphine)rhenium(V)
Conditions | Yield |
---|---|
In dichloromethane suspn. Ru colmplex and maltol in CH2Cl2 was refluxed for 4 h; soln. was kept at -15°C for 7 days, ppt. was filtered off, washedwith n-hexane and dried in vacuo; elem. anal.; | 96% |
Conditions | Yield |
---|---|
In methanol at 64℃; for 1h; | 96% |
Conditions | Yield |
---|---|
In methanol for 1h; Reflux; | 96% |
Maltol
3-hydroxy-2-methylpyrid-4-one
Conditions | Yield |
---|---|
Stage #1: Maltol With ammonium hydroxide at 40℃; for 2h; Stage #2: With ammonium carbonate at 40℃; for 10h; Reagent/catalyst; Temperature; Reflux; | 95.7% |
With ammonia In water for 10h; Reflux; | 85% |
With ammonia In water for 10h; Reflux; | 79% |
Maltol
3-O-benzylmaltol
Conditions | Yield |
---|---|
by a literature procedure; | 95% |
Maltol
Conditions | Yield |
---|---|
Stage #1: Maltol With sodium hydroxide In water pH=11.6 - 13.5; Stage #2: With iron(III) chloride In water pH=7.1; Product distribution / selectivity; | 95% |
With ferric citrate; sodium carbonate In water at 20℃; pH=~ 9 - 11.6; Product distribution / selectivity; | |
With iron(II) gluconate; potassium hydroxide In water at 20℃; pH=~ 9 - 11.6; Product distribution / selectivity; Heating / reflux; | |
With sodium hydroxide; sodium iron(II) citrate In water Product distribution / selectivity; | |
With sodium hydroxide; sodium ferric citrate In water at 20℃; pH=~ 9 - 11.6; Product distribution / selectivity; |
Conditions | Yield |
---|---|
In toluene; acetonitrile Electrolysis; electrochemical oxidation of Sn (anode metal) in a CH3CN:toluene (1:1) soln. containing Et4NClO4 of 3-hydroxy-2-methyl-4-pyrone over a period of 1-2 h under N2; filtn., reducing of volume of soln., cooling, drying in vac., washing of yellow solid (EtOH), elem. anal.; | 95% |
Maltol
LACTIC ACID
3-hydroxy-2-methyl-4-pyrone/lactic acid 1:1 cocrystals
Conditions | Yield |
---|---|
In methanol at 64℃; for 1h; | 95% |
Conditions | Yield |
---|---|
In dichloromethane for 4h; Reflux; Inert atmosphere; | 95% |
In dichloromethane for 4h; Reflux; | 54% |
Maltol
chloromethyl methyl ether
3-Methoxymethoxy-2-methyl-pyran-4-one
Conditions | Yield |
---|---|
With diisopropylamine Ambient temperature; | 94% |
Conditions | Yield |
---|---|
tetra(n-butyl)ammonium hydroxide In dichloromethane; water Etherification; Heating; | 94% |
Stage #1: Maltol With tetra(n-butyl)ammonium hydroxide In water at 20℃; for 1h; Stage #2: 5-(chloromethyl)-1,2,3-trimethoxybenzene In dichloromethane for 24h; Heating; |
Conditions | Yield |
---|---|
In methanol for 1h; Reflux; | 94% |
Conditions | Yield |
---|---|
In methanol at 64℃; for 1h; | 93% |
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