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
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inquiryWelcome 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 c
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inquiryOur 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
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inquiryOur 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
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inquiryOur company was built in 2009 with an ISO certificate.In the past 6 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 on.O
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inquiryOur 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
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inquiryHenan 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
Appearance:white or light yellow crystalline powder Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for research and industrial manufacture. Transportation:By Se
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inquiryHangzhou 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
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inquiryA 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
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inquiryJ&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
Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and
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inquiryWe 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
Cas:504-30-3
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inquiryProduct name: 3(2H)-Pyridazinone CAS No.:504-30-3 Molecule Formula:CC4H4N2O Molecule Weight:96.09 Purity: 98.0% Package: 200kg/drum Description:Colorless liquid Manufacture Standards:Enterprise Standard TESTING ITEMS
Cas:504-30-3
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inquiryProduct 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,
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
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inquiryWe Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O
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
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
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GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation
We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp
Shanghai Finebiotech Co.,Ltd.was established in 2020, which providing professional chemical services. As a customer-oriented company, we have distinguished ourself from others in providing worldwide customers with cost-effective and efficient service
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:504-30-3
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inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou
3-Phenyl-7aH-1-oxa-2,3a,4-triaza-indene
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With air In benzene Ambient temperature; Irradiation; | 90% |
mucochloric acid
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
Stage #1: mucochloric acid With tert-butylhydrazine In water; toluene at 23℃; for 2.8h; Stage #2: With tetrabutylammomium bromide; titanium(IV) oxide In water; toluene at 20℃; for 4.6h; Temperature; | 88.9% |
N'-acryloyl-N-allyl-4-methylbenzenesulfonohydrazide
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With Hoveyda-Grubbs catalyst second generation In dichloromethane at 40℃; for 36h; Sealed tube; Inert atmosphere; | 87% |
5-(1,2-diaza-1-t-butylbutadien-4-ylidene)-2,2-dimethyl-1,3-dioxan-4,6-dione
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
at 750℃; under 0.01 - 0.1 Torr; for 1.5h; | 63% |
6-chloro-2H-pyridazin-3-one
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With palladium on activated charcoal; hydrogen; potassium carbonate In ethyl acetate under 1551.49 Torr; for 3h; | 55% |
piperidine
diethyl ether
epichlorohydrin
6-(3-allyl-4-hydroxy-phenyl)-4,5-dihydro-2H-pyridazin-3-one
A
2H-Pyridazin-3-one
B
6-(3-allyl-4-oxiranylmethoxy-phenyl)-4,5-dihydro-2H-pyridazin-3-one
Conditions | Yield |
---|---|
With sodium hydroxide In dichloromethane | A 47% B n/a |
Conditions | Yield |
---|---|
In benzene for 3h; Heating; | A 3% B 29% |
Conditions | Yield |
---|---|
With benzonitrile oxide In benzene for 3h; Heating; | A 3% B 29% |
3-oxo-2,3,4,5-tetrahydropyridazine
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With chloroform; bromine |
Conditions | Yield |
---|---|
With sodium hydroxide; palladium on activated charcoal Hydrogenation; |
Conditions | Yield |
---|---|
With sodium hydroxide; palladium on activated charcoal Hydrogenation; |
6-oxo-1,6-dihydro-pyridazine-4-carboxylic acid
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With copper |
3-oxo-2,3-dihydro-pyridazine-4-carboxylic acid
2H-Pyridazin-3-one
6-oxo-1,6-dihydro-pyridazine-3,4-dicarboxylic acid
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With copper |
3-(ethyloxy)pyridazine
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
at 376.8℃; Rate constant; Thermodynamic data; further temperatures; |
phosgene
5-[3-(cyclopentyloxy)-4-methoxyphenyl]-1-methyl-3-pyrazolidinone
A
2H-Pyridazin-3-one
B
3-[3-(cyclopentyloxy)-4-methoxyphenyl]-2-methyl-5-oxo-N-(3-pyridinylmethyl)-1-pyrazolidine carboxamide
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; methanol; ethyl acetate; toluene |
allyl bromide
6-(3-hydroxyphenyl)-4,5-dihydro-3(2H)-pyridazinone
A
2H-Pyridazin-3-one
B
6-(3-allyloxy-phenyl)-4,5-dihydro-2H-pyridazin-3-one
Conditions | Yield |
---|---|
With potassium carbonate In acetone |
propyl bromide
6-(4-hydroxyphenyl)-4,5-dihydro-3(2H)-pyridazinone
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
In sodium hydroxide; ethanol |
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In tetrahydrofuran at 20℃; |
2H-Pyridazin-3-one
N,N-dimethyl-formamide dimethyl acetal
2-methylpyridazin-3(2H)-one
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide Heating; | 96% |
2H-Pyridazin-3-one
4-bromoethylbutanoate
ethyl 4-[pyridazin-3(2H)-one-2-yl]-butyrate
Conditions | Yield |
---|---|
With potassium carbonate In acetone for 24h; Heating; | 95% |
Conditions | Yield |
---|---|
With copper(II) 7-n-propyl-8-hydroxyquinolinate; potassium carbonate In N,N-dimethyl-formamide at 100℃; for 20h; | 94% |
Conditions | Yield |
---|---|
With copper(II) 7-n-propyl-8-hydroxyquinolinate; potassium carbonate In N,N-dimethyl-formamide at 140℃; for 20h; | 90% |
Conditions | Yield |
---|---|
With potassium hydroxide; tetrabutylammomium bromide In benzene for 5h; Ambient temperature; | 89% |
With N-benzyl-trimethylammonium hydroxide In ethanol for 8h; Heating; |
Conditions | Yield |
---|---|
With caesium carbonate; hydroxybenzaldoxime; copper(I) oxide In acetonitrile at 82℃; for 100h; | 89% |
2H-Pyridazin-3-one
1-{[(1S,2S)-2-(4-bromophenyl)cyclopropyl]methyl}-(2S)-2-methylpyrrolidine
Conditions | Yield |
---|---|
With pyridine; potassium carbonate; copper(l) iodide; N,N`-dimethylethylenediamine In ethyl acetate at 115℃; Inert atmosphere; | 86% |
With pyridine; copper(l) iodide; N,N`-dimethylethylenediamine at 135℃; for 16h; | |
With pyridine; copper(l) iodide; N,N`-dimethylethylenediamine at 135℃; for 16h; Inert atmosphere; Sealed tube; |
Conditions | Yield |
---|---|
With copper(II) 7-n-propyl-8-hydroxyquinolinate; potassium carbonate In N,N-dimethyl-formamide at 140℃; for 20h; | 85% |
2H-Pyridazin-3-one
dimethyl acetylenedicarboxylate
dimethyl 2-(6-oxopyridazin-1(6H)-yl)fumarate
Conditions | Yield |
---|---|
With triphenyl-arsane In acetone at -5℃; for 5.16667h; diastereospecific reaction; | 85% |
With pyridine In dichloromethane at 20℃; for 24h; stereoselective reaction; | 80% |
With triphenyl-arsane In methanol at 28℃; Catalytic behavior; Kinetics; Mechanism; Temperature; Reagent/catalyst; Concentration; diastereoselective reaction; |
2H-Pyridazin-3-one
6-bromo-2-(3,3-dimethoxycyclobutyl)benzothiazole
2-(2-(3,3-dimethoxycyclobutyl)benzothiazol-6-yl)-pyridazin-3(2H)-one
Conditions | Yield |
---|---|
With pyridine; potassium carbonate; copper(l) chloride; N,N`-dimethylethylenediamine at 100℃; for 16.5h; Solvent; Reagent/catalyst; Inert atmosphere; | 84% |
2H-Pyridazin-3-one
ethyl acrylate
ethyl 3-[pyridazin-3(2H)-one-2-yl]-propionate
Conditions | Yield |
---|---|
In ethanol | 83% |
bis(4-tert-butylphenyl)iodonium trifluoromethanesulfonate
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With triethylamine; copper(l) chloride In toluene at 20℃; for 1h; Inert atmosphere; | 82% |
2H-Pyridazin-3-one
ethyl (3aR,6aR)-1-(4'-bromo-1,1'-biphenyl-4-yl)hexahydropyrrolo[3,4-b]pyrrole-5(1H)-carboxylate
ethyl (3aR,6aR)-1-[4'-(6-oxopyridazin-1(6H)-yl)-1,1'-biphenyl-4-yl]hexahydropyrrolo[3,4-b]pyrrole-5(1H)-carboxylate
Conditions | Yield |
---|---|
With potassium carbonate; copper(l) iodide; 8-quinolinol In N,N-dimethyl-formamide at 17 - 140℃; for 18h; | 81.9% |
With copper(l) iodide; 8-quinolinol; potassium carbonate In N,N-dimethyl-formamide at 17 - 140℃; for 18h; Product distribution / selectivity; | 81.9% |
Conditions | Yield |
---|---|
With copper(II) 7-n-propyl-8-hydroxyquinolinate; potassium carbonate In N,N-dimethyl-formamide at 100℃; for 20h; | 80% |
2H-Pyridazin-3-one
3,5-dimethylphenyl iodide
Conditions | Yield |
---|---|
With copper(II) 7-n-propyl-8-hydroxyquinolinate; potassium carbonate In N,N-dimethyl-formamide at 100℃; for 20h; | 80% |
2H-Pyridazin-3-one
(6S,7R)-tert-butyl 7-(4-chloro-3-fluorophenyl)-6-((methylsulfonyloxy)methyl)-1,4-oxazepane-4-carboxylate
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 4h; | 78% |
2H-Pyridazin-3-one
2-phenyl-1,3,4-oxadiazole
3-(5-phenyl-1,3,4-oxadiazol-2-yl)pyridazine
Conditions | Yield |
---|---|
Stage #1: 2H-Pyridazin-3-one With N-ethyl-N,N-diisopropylamine; bromo-tris(1-pyrrolidinyl)phosphonium hexafluorophosphate In 1,4-dioxane at 100℃; for 0.5h; Inert atmosphere; Sealed vessel; Microwave irradiation; Stage #2: 2-phenyl-1,3,4-oxadiazole With copper(l) iodide; palladium diacetate; potassium carbonate; triphenylphosphine In 1,4-dioxane; 2,4-dichlorophenoxyacetic acid dimethylamine at 120℃; for 0.666667h; Inert atmosphere; Microwave irradiation; Sealed vessel; | 75% |
2H-Pyridazin-3-one
Conditions | Yield |
---|---|
With pyridine; potassium carbonate; copper Heating / reflux; | 74% |
Conditions | Yield |
---|---|
With trichlorophosphate at 60℃; for 1.5h; | 73% |
With trichlorophosphate | 63% |
Stage #1: 2H-Pyridazin-3-one With trichlorophosphate at 85℃; for 4.5h; Stage #2: With sodium hydroxide In water at 0℃; pH=> 10; | 46% |
Conditions | Yield |
---|---|
With potassium hydroxide; tetrabutylammomium bromide In benzene for 5h; Ambient temperature; | 73% |
2H-Pyridazin-3-one
3,3'-bipyridazine
Conditions | Yield |
---|---|
Stage #1: 2H-Pyridazin-3-one With triethylamine; bromo-tris(1-pyrrolidinyl)phosphonium hexafluorophosphate In 1,4-dioxane at 100℃; for 0.5h; Inert atmosphere; Sealed vessel; Microwave irradiation; Stage #2: With copper(l) iodide; palladium diacetate; potassium carbonate; triphenylphosphine In 1,4-dioxane; 2,4-dichlorophenoxyacetic acid dimethylamine at 120℃; for 0.666667h; Inert atmosphere; Microwave irradiation; Sealed vessel; | 71% |
Conditions | Yield |
---|---|
Stage #1: 2H-Pyridazin-3-one With triethylamine; bromo-tris(1-pyrrolidinyl)phosphonium hexafluorophosphate In 1,4-dioxane at 100℃; for 0.5h; Inert atmosphere; Sealed vessel; Microwave irradiation; Stage #2: benzoxazole With copper(l) iodide; palladium diacetate; potassium carbonate; triphenylphosphine In 1,4-dioxane; 2,4-dichlorophenoxyacetic acid dimethylamine at 120℃; for 0.666667h; Inert atmosphere; Microwave irradiation; Sealed vessel; | 71% |
Conditions | Yield |
---|---|
With sodium methylate In methanol; N,N-dimethyl-formamide at 90℃; for 4h; | 70% |
Conditions | Yield |
---|---|
With potassium carbonate In acetone Alkylation; Heating; | 70% |
2H-Pyridazin-3-one
Ethyl 3-bromopropionate
ethyl 3-[pyridazin-3(2H)-one-2-yl]-propionate
Conditions | Yield |
---|---|
With potassium carbonate In acetone for 24h; Heating; | 70% |
2H-Pyridazin-3-one
2-bromo-6-iodo-naphthalene
Conditions | Yield |
---|---|
With copper(II) 7-n-propyl-8-hydroxyquinolinate; potassium carbonate In N,N-dimethyl-formamide at 100℃; for 20h; | 70% |
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