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
Cas:277299-70-4
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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
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inquiryPurity: 98% up Storage:room temprature Package:25kg/drum Application:Eltraombopag intermediate Port:Beijing/Shanghai/Shenzhen/Hangzhou
Cas:277299-70-4
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Type:Trading Company
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
Cas:277299-70-4
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Type:Manufacturers
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
Cas:277299-70-4
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inquiryOur 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 o
Cas:277299-70-4
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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
Cas:277299-70-4
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FOB Price: $139.0 / 210.0
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inquiryAdvantages: Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best service is
Cas:277299-70-4
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inquiry1.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
Cas:277299-70-4
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inquiry2-(3,4-Dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one CAS:277299-70-4 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates,
Cas:277299-70-4
Min.Order:1 Gram
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inquiryHello, 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
Cas:277299-70-4
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inquiry1)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 etc. 3) OEM/ODM Available; 4) Reasonable & Compet
Cas:277299-70-4
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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
Cas:277299-70-4
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inquiryProduct Name: 2-(3,4-Dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one Synonyms: 2-(3,4-Dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one;2-(3,4-Dimethylphenyl)-5-methyl-1H-pyrazol-3(2H)-one;2-(3,4-dimethylphenyl)-5-methyl-1,2-dihydro-3H
Cas:277299-70-4
Min.Order:100 Gram
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inquiryOur Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter
Cas:277299-70-4
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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
Cas:277299-70-4
Min.Order:4 Kilogram
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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
Cas:277299-70-4
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inquiryZibo 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
Cas:277299-70-4
Min.Order:10 Gram
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Type:Lab/Research institutions
inquiryHangzhou Huarong Pharm Co., Ltd. established since 2009 , has been always focusing on supplying products and services to our clients in the field of small molecule drug. Huarong Pharm has built platforms for the research, development and manufac
Cas:277299-70-4
Min.Order:1 Gram
FOB Price: $1.0 / 2.0
Type:Trading Company
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,
Cas:277299-70-4
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryGMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
Cas:277299-70-4
Min.Order:1 Milligram
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Type:Trading Company
inquiryShandong 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
Cas:277299-70-4
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryOur product has a very high quality and now we are exporting to customers overseas with very positive feedback. With best price, quality and service from Nanjing Sunny, we are confident to set up a very nice cooperation with customers all over the w
Cas:277299-70-4
Min.Order:1 Kilogram
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Type:Trading Company
inquiryWuhu Nuovo Chemical Technology Co., Ltd. was established in August 2014, mainly engaged in the development, production and sales of ionic liquids, ribose, nucleosides, nucleotides and related chemicals; Products are mainly used in new energy, new ma
Cas:277299-70-4
Min.Order:100 Gram
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Type:Manufacturers
inquiry1.High quality 2.High purity 3.Best price 4.Best service 5.Professional manufacturer 6.Loyal and honest supplier 7.Fast response to customer within 6 hours Application:Pharmaceutical Intermediate
Cas:277299-70-4
Min.Order:200 Gram
Negotiable
Type:Trading Company
inquirySAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in custom synthe
Cas:277299-70-4
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Type:Lab/Research institutions
inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
Cas:277299-70-4
Min.Order:0
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Type:Lab/Research institutions
inquiryGOLDEN 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
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Cas:277299-70-4
Min.Order:0
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Type:Lab/Research institutions
inquiryLuyunjia Chemistry Xiamen Limited is a high-tech company specializing in R&D and manufacturing of photoinitiators monomers and oligomers, UV absorbers and pharmaceutical intermediates, and pharmaceutical intermediates of generic drug. and has a h
Cas:277299-70-4
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryethyl acetoacetate
3,4-dimethylphenylhydrazine hydrochloride
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
Conditions | Yield |
---|---|
With sodium bicarbonate; sodium acetate In diethyl ether; acetic acid | 76% |
With sodium acetate In acetic acid for 24h; Heating / reflux; | 76% |
With sodium acetate; acetic acid for 24h; Reflux; | 76% |
ethyl acetoacetate
3,4-dimethylphenylhydrazine
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
Conditions | Yield |
---|---|
In acetic acid | 64% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
2-amino-6-bromophenol
Conditions | Yield |
---|---|
Stage #1: 2-amino-6-bromophenol With hydrogenchloride; sodium nitrite In ethanol; water at 0 - 10℃; Stage #2: 2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one With triethylamine In ethanol; water at 20 - 30℃; for 2h; Reagent/catalyst; | 98% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
3'-amino-2'-hydroxy-1,1'-biphenyl-3-carboxylic acid hydrochloride
3’-{N’-[1-(3,4-dimethylphenyl)-3-methyl-5-oxo-1,5-di-hydropyrazol-4-ylidene]hydrazino}-2’-hydroxybiphenyl-3-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: 3'-amino-2'-hydroxy-1,1'-biphenyl-3-carboxylic acid hydrochloride With hydrogenchloride; sodium nitrite In methanol; water for 2.5h; pH=1-2; Stage #2: 2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one With sodium hydrogencarbonate In methanol; water at 20℃; for 12h; pH=8; Stage #3: With hydrogenchloride In methanol; water at 0 - 20℃; for 3h; pH=1-2; | 90% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
3-amino-4-hydroxybenzoic acid
Conditions | Yield |
---|---|
82% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
Conditions | Yield |
---|---|
82% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
3′-amino-2′-hydroxy biphenyl-3-carboxylic acid
triethylamine
Conditions | Yield |
---|---|
Stage #1: 3'-amino-2'-hydroxy-1,1'-biphenyl-3-carboxylic acid With hydrogenchloride; sodium nitrite In methanol; water at 0 - 10℃; for 1.25h; Stage #2: 2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one; triethylamine at 0 - 60℃; for 4h; pH=6 - 8; pH-value; | 76% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
2-amino-phenol
Conditions | Yield |
---|---|
Stage #1: 2-amino-phenol With hydrogenchloride; sodium nitrite In methanol; water at 75 - 80℃; for 24h; Stage #2: 2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one With triethylamine In methanol; water at 0 - 25℃; for 2.5h; | 68% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
C13H11NO3*ClH
4'-{N'-[1-(3,4-dimethylphenyl)-3-methyl-5-oxo-1,5-dihydropyrazol-4-ylidene]hydrazino}-3'-hydroxybiphenyl-4-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: C13H11NO3*ClH With hydrogenchloride; sodium nitrite In water at 5℃; for 0.166667h; Stage #2: 2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one With sodium hydrogencarbonate In ethanol; water at 20℃; for 24h; pH=7 - 8; | 35% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
2-amino-4-chlorophenol-6-sulfonic acid
Conditions | Yield |
---|---|
34% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
3-aminosalicylic acid
Conditions | Yield |
---|---|
32% |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
3′-amino-2′-hydroxy biphenyl-3-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: hydrogenchloride; sodium nitrite / methanol; water / 1.25 h / 0 - 10 °C 1.2: 4 h / 0 - 60 °C / pH 6 - 8 2.1: methanol / 7.5 h / 25 - 60 °C View Scheme |
2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
2-bromo-6-nitro-phenol
3-Carboxyphenylboronic acid
Conditions | Yield |
---|---|
Stage #1: 2-bromo-6-nitro-phenol With benzyl bromide; potassium carbonate In acetonitrile at 90℃; for 3h; Stage #2: 3-Carboxyphenylboronic acid With potassium carbonate; palladium dichloride In 1,4-dioxane; water at 50℃; under 7500.75 Torr; for 4h; Inert atmosphere; Stage #3: 2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one Further stages; |
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