we are professional Pharmaceutical company. We are specialized in manufacturing and R&D of API & Intermediates, Contract Manufacturing, Contract Research, and International Trading business as well. *We own a R&D center in Hangzhou. I
Cas:55-03-8
Min.Order:10 Gram
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inquiryAs 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
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inquiryWe can provide GMP validation service that complies with SFDA, FDA, WHO and EU EMPA.Excellent registration team could help us easlily to register our products in different countries.If you and your customer are interested in some products or need C
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inquiry1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; ...... Appearance:White powder Storage:2-8°C Package:100g/bottle; 1kg/foil bag
Cas:55-03-8
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inquiry1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s
Cas:55-03-8
Min.Order:1 Gram
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inquiryCangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new api, intermedi
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 Scientific and so on.O
Cas:55-03-8
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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:55-03-8
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inquiryAdvantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&
Cas:55-03-8
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inquiryProduct Name: Levothyroxine sodium CAS No.: 55-03-8 Molecular formula: C15H20I4NNaO9 Molecular weight: 888 Appearance: white powder Storage:Store in cool and dry place, away from sun light. Pack
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
Cas:55-03-8
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inquiryOur company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present
Cas:55-03-8
Min.Order:10 Gram
FOB Price: $164.0 / 172.0
Type:Trading Company
inquiryLevothyroxine sodium CAS55-03-8 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 organic intermed
Cas:55-03-8
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:55-03-8
Min.Order:1 Kilogram
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inquiry1.high quality: quality is life. quality is the most important element for all goods. we have a lab doing research in wuhan china. hplc and nmr is available if needed. 2.reasonable price: we provide high quality products wi
Cas:55-03-8
Min.Order:10 Gram
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Type:Lab/Research institutions
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:55-03-8
Min.Order:0
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Type:Lab/Research institutions
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
Q1: Are you a manufacturer?Answer: Yes, we are factory founded on 2002. Q2: How to contact with us?Click "contact supplier" And then send us message the product you interest in, you will get reply within 12 hours. Q3:Which kind of payment terms do yo
Cas:55-03-8
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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
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inquiryTriumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Business Custom Synthesis: Trading(Raw Mater
Cas:55-03-8
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FOB Price: $18.0 / 20.0
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inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
Cas:55-03-8
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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:55-03-8
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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:55-03-8
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryHigh purity levothyroxine sodium 55-03-8 in stock immediately delivery good supplierAppearance:Powder Storage:Dry and ventilated Package:according to customers' requirements Application:APIs Transportation:By air(EMS or EUB or FedEx or TNT ect...) o
Cas:55-03-8
Min.Order:1 Gram
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Type:Other
inquirySuperior quality, moderate price & quick delivery. Appearance:white powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:One of the thyroid
Cas:55-03-8
Min.Order:1 Kilogram
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Type:Trading Company
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
Cas:55-03-8
Min.Order:10 Gram
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Type:Lab/Research institutions
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:55-03-8
Min.Order:1 Kilogram
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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
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Conditions | Yield |
---|---|
With sodium carbonate In water Reflux; | 98% |
Stage #1: L-thyroxine With sulfuric acid; ammonia In butan-1-ol at 5 - 65℃; for 1h; pH=8; Stage #2: With sodium hydroxide In propan-1-ol; butan-1-ol at 25 - 50℃; pH=10; | 83% |
With sodium carbonate Reflux; | 79.2% |
With sodium carbonate In propan-1-ol; water at 80 - 90℃; for 1h; | 68% |
L-thyroxine sodium
Conditions | Yield |
---|---|
Stage #1: O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine disodium salt With sodium hydroxide In water at 25 - 30℃; pH=~ 12 - 13; Stage #2: With hydrogenchloride In water pH=2 - 3; Product distribution / selectivity; | 92% |
With pyrographite; sodium hydroxide; sodium sulfite In water at 20℃; for 0.5h; | 84% |
Stage #1: O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine disodium salt With acetic acid In propan-1-ol; water at 55 - 60℃; Stage #2: With sodium carbonate In propan-1-ol; water at 80 - 90℃; | 81% |
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: sodium hydroxide / water / 1 h 1.2: 2 h / 20 - 40 °C 2.1: diisopropylamine / water; butan-1-ol / 2 h / 20 - 90 °C 2.2: 2 h / 20 - 30 °C 3.1: acetic acid; hydrogen iodide / 5 h / 100 °C 4.1: methylamine / methanol / 25 - 30 °C 4.2: -8 - 0 °C 4.3: 15 - 20 °C 5.1: sulfuric acid; ammonia / butan-1-ol / 1 h / 5 - 65 °C / pH 8 5.2: 25 - 50 °C / pH 10 View Scheme | |
Multi-step reaction with 6 steps 1.1: sodium hydroxide / water / 0 - 15 °C 2.1: 0.5 h / 20 °C 2.2: 1 h / 20 - 50 °C 3.1: copper(II) perchlorate hexahydrate / dichloromethane / 0.17 h / 25 °C 3.2: 3 h / 25 °C 4.1: acetic acid; hydrogen iodide / 4 h / 120 °C 5.1: sodium iodide / water / 0.08 h / 20 °C / Inert atmosphere 5.2: 0.5 h / 20 °C 5.3: 1.25 h / 20 - 60 °C 6.1: sodium hydroxide; sodium sulfite; pyrographite / water / 0.5 h / 20 °C View Scheme |
L-thyroxine sodium
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: diisopropylamine / water; butan-1-ol / 2 h / 20 - 90 °C 1.2: 2 h / 20 - 30 °C 2.1: acetic acid; hydrogen iodide / 5 h / 100 °C 3.1: methylamine / methanol / 25 - 30 °C 3.2: -8 - 0 °C 3.3: 15 - 20 °C 4.1: sulfuric acid; ammonia / butan-1-ol / 1 h / 5 - 65 °C / pH 8 4.2: 25 - 50 °C / pH 10 View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: diisopropylamine / water; butan-1-ol / 2 h / 20 - 90 °C 1.2: 2 h / 20 - 30 °C 2.1: acetic acid; hydrogen iodide / 5 h / 100 °C 3.1: methylamine / methanol / 25 - 30 °C 3.2: -8 - 0 °C 3.3: 15 - 20 °C 4.1: sulfuric acid; ammonia / butan-1-ol / 1 h / 5 - 65 °C / pH 8 4.2: 25 - 50 °C / pH 10 View Scheme |
2-amino-3-(3,5-diiodo-4-(4-methoxyphenoxy)phenyl)propanoic acid
L-thyroxine sodium
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: acetic acid; hydrogen iodide / 5 h / 100 °C 2.1: methylamine / methanol / 25 - 30 °C 2.2: -8 - 0 °C 2.3: 15 - 20 °C 3.1: sulfuric acid; ammonia / butan-1-ol / 1 h / 5 - 65 °C / pH 8 3.2: 25 - 50 °C / pH 10 View Scheme |
3,5-diiodo-L-thyronine
L-thyroxine sodium
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: tert-butylamine; sodium iodide; sodium hypochlorite / methanol / 20 - 30 °C 2: sodium carbonate / water; propan-1-ol / 1 h / 80 - 90 °C View Scheme | |
Multi-step reaction with 3 steps 1.1: tert-butylamine; sodium iodide; sodium hypochlorite / methanol / 20 - 30 °C 2.1: sodium hydroxide / water; propan-1-ol / 80 - 90 °C 3.1: acetic acid / water; propan-1-ol / 55 - 60 °C 3.2: 80 - 90 °C View Scheme |
{Cu(HOC6H2I2CH2CH(NH2)COO)2}
L-thyroxine sodium
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: N-ethyl-N,N-diisopropylamine / butan-1-ol / 2 h / 90 °C 2: hydrogenchloride / water / 5 h / 100 °C 3: potassium iodide; iodine; sodium hydroxide / water / -10 - 10 °C 4: sodium carbonate / Reflux View Scheme |
2-amino-3-(3,5-diiodo-4-(4-methoxyphenoxy)phenyl)propanoic acid
L-thyroxine sodium
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: hydrogenchloride / water / 5 h / 100 °C 2: potassium iodide; iodine; sodium hydroxide / water / -10 - 10 °C 3: sodium carbonate / Reflux View Scheme |
4,4'-dimethoxy-diphenyliodonium bromide
L-thyroxine sodium
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: N-ethyl-N,N-diisopropylamine / butan-1-ol / 2 h / 90 °C 2: hydrogenchloride / water / 5 h / 100 °C 3: potassium iodide; iodine; sodium hydroxide / water / -10 - 10 °C 4: sodium carbonate / Reflux View Scheme |
N-acetyl-O-(4-methoxyphenyl)-3,5-diiodo-L-tyrosine ethyl ester
L-thyroxine sodium
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: acetic acid; hydrogen iodide / 4 h / 120 °C 2.1: sodium iodide / water / 0.08 h / 20 °C / Inert atmosphere 2.2: 0.5 h / 20 °C 2.3: 1.25 h / 20 - 60 °C 3.1: sodium hydroxide; sodium sulfite; pyrographite / water / 0.5 h / 20 °C View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: 0.5 h / 20 °C 1.2: 1 h / 20 - 50 °C 2.1: copper(II) perchlorate hexahydrate / dichloromethane / 0.17 h / 25 °C 2.2: 3 h / 25 °C 3.1: acetic acid; hydrogen iodide / 4 h / 120 °C 4.1: sodium iodide / water / 0.08 h / 20 °C / Inert atmosphere 4.2: 0.5 h / 20 °C 4.3: 1.25 h / 20 - 60 °C 5.1: sodium hydroxide; sodium sulfite; pyrographite / water / 0.5 h / 20 °C View Scheme |
N-acetyl-3,5-diiodo-L-tyrosine ethyl ester
L-thyroxine sodium
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: copper(II) perchlorate hexahydrate / dichloromethane / 0.17 h / 25 °C 1.2: 3 h / 25 °C 2.1: acetic acid; hydrogen iodide / 4 h / 120 °C 3.1: sodium iodide / water / 0.08 h / 20 °C / Inert atmosphere 3.2: 0.5 h / 20 °C 3.3: 1.25 h / 20 - 60 °C 4.1: sodium hydroxide; sodium sulfite; pyrographite / water / 0.5 h / 20 °C View Scheme |
L-thyroxine sodium
O-[6-[(6-[3-{(1S)-1-hydroxycarbonyl-2-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]ethylaminocarbonyl}propionylamino]-1-oxohexyl)amino]-1-oxohexyl]gramicidin A
Conditions | Yield |
---|---|
With triethylamine In methanol; dichloromethane at 20℃; for 16h; | 63% |
L-thyroxine sodium
O-{6-[6-({6-[(6-[3-{(1S)-1-hydroxycarbonyl-2-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]ethylaminocarbonyl}propionylamino]-1-oxohexyl)amino]-1-oxohexyl}amino)-1-oxohexyl]amino-1-oxohexyl}gramicidin A
Conditions | Yield |
---|---|
With triethylamine In methanol; dichloromethane at 20℃; for 16h; | 51% |
L-thyroxine sodium
Conditions | Yield |
---|---|
Stage #1: O-succinylgramicidin A With triethylamine; isobutyl chloroformate In tetrahydrofuran at 0℃; for 0.5h; Stage #2: L-thyroxine sodium In tetrahydrofuran; water at 20℃; | 19% |
L-thyroxine sodium
Conditions | Yield |
---|---|
With triethylamine In methanol; dichloromethane at 20℃; for 18h; | 20 mg |
L-thyroxine sodium
Conditions | Yield |
---|---|
With sodium chloride; trifluoroacetic acid; trifluoroacetic anhydride In methanol; chloroform; ethyl acetate; Petroleum ether |
Conditions | Yield |
---|---|
With ethylenediaminetetraacetic acid In water; glycerol | |
With ethylenediaminetetraacetic acid In water; glycerol | |
With ethylenediaminetetraacetic acid In water; glycerol | |
With ethylenediaminetetraacetic acid In water; glycerol | |
With ethylenediaminetetraacetic acid In glycerol |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 20 - 25℃; for 1h; | 900 mg |
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