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inquiryAppearance:White to off-white powder Storage:ln stock Package:5kg/drum Application:For structural analysis of proteins Transportation:Express/Sea/Air Port:Any port in China
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inquiryDayangchem's 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. DayangChem can provide different quantities
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inquirySpecifications CAS No.: 3211-76-5 Other Names: l-selenomethionine MF: 1 EINECS No.: 1 Place of Origin: Shaanxi, China (Mainland)
Cas:3211-76-5
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inquiryL-(+)-Selenomethionine CAS 3211-76-5 Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed additives, Fine chemicals in dis
Cas:3211-76-5
Min.Order:1 Kilogram
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inquiryL-(+)-Selenomethionine[CAS:3211-76-5] HANGZHOU THINK CHEMICAL CO., LTD. (THINKCHEM) is an integrative corporation of trade, research and contract manufacture. With about ten years of business experiences on the marketing & distributi
The 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
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inquiryhebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm
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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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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
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Min.Order:1 Kilogram
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inquiryhe company has advanced technology, as well as a large number of excellent R & D team, to provide customers from the grams to one hundred kilograms and tons of high-quality products, competitive prices and quality se T rvice Appearance:Whit
Advantage : 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
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Min.Order:1 Kilogram
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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 prese
Cas:3211-76-5
Min.Order:1 Kilogram
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Type:Trading Company
inquiryL-Selenomethionine CAS:3211-76-5 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 interme
Cas:3211-76-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
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Min.Order:1 Kilogram
Negotiable
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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
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Min.Order:10 Gram
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Type:Lab/Research institutions
inquiryOverview of Our Factories Our Factories production lines Our Factories R&D ability Our Factories warehouse Our Factorie
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Min.Order:1 Kilogram
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Min.Order:1 Kilogram
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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
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Min.Order:0
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inquiryShanghai SOYOUNG onsite assessment conducted by Bureau Veritas commissioned at June 2018. Assessed Supplier of Shanghai SOYOUNG is a faithful and professional supplier of health raw materials in pharmacy, food, cosmetic and other fields for many ye
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inquiryOur Advantage 1. Rich experience We specialize in this filed for many years, our APIs exported to all over the world and and we established long friendly relations of cooperation with our clients. 2. Great quality,purity and favorable Good qual
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Min.Order:1 Kilogram
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inquiryProduct Name: L-Selenomethionine Synonyms: (S)-(+)-2-AMINO-4-(METHYLSELENO)BUTANOIC ACID;(S)-2-AMINO-4-(METHYLSELENO)BUTYRIC ACID;SEMET;SELENOMETHIONINE, L-(+)-;SELENO-L-METHIONINE;L-(+)-2-AMINO-4-(METHYLSELENO)BUTANOIC ACID;L-(+)-SELENOMETHIONI
Cas:3211-76-5
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryBest quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia
L-Selenomethionine CAS 3211-76-5 Our advantage 1.Top quality: Using high quality material and establishing a strict quality control system,assigning specific persons in charge of each part of production,from raw material purchase to assembly.
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Min.Order:1 Kilogram
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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:3211-76-5
Min.Order:1 Kilogram
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inquiryN-Boc-L-selenomethionine
Seleno-L-methionine
Conditions | Yield |
---|---|
With trifluoroacetic acid In dichloromethane for 0.5h; Ambient temperature; | 96% |
sodium methylselenide
(3S)-(3-amino-3-carboxypropyl)dimethylsulfonium iodide
Seleno-L-methionine
Conditions | Yield |
---|---|
In methanol; ethanol at 45℃; for 9h; Solvent; Temperature; Inert atmosphere; | 82% |
Conditions | Yield |
---|---|
Stage #1: L,L-selenohomocystine With sodium tetrahydroborate; ethanol at 30 - 45℃; for 5h; Inert atmosphere; Stage #2: dimethyl sulfate at 25 - 30℃; for 3h; Temperature; | 81.8% |
methyllithium
α-amino-γ-bromobutyric acid methyl ester hydrochloride
Seleno-L-methionine
Conditions | Yield |
---|---|
Stage #1: methyllithium; α-amino-γ-bromobutyric acid methyl ester hydrochloride With selenium; boric acid tributyl ester In tetrahydrofuran; diethyl ether; N,N-dimethyl-formamide at -78 - 20℃; for 0.166667h; Inert atmosphere; Stage #2: With methanol; sodium hydroxide In tetrahydrofuran; diethyl ether; N,N-dimethyl-formamide for 0.166667h; Temperature; Reagent/catalyst; | 66% |
Seleno-L-methionine
Conditions | Yield |
---|---|
(i) aq. H2SO4, AcOEt, (ii) HBr, HSCH2CH2OH, AcOH; Multistep reaction; |
(2S)-2-amino-4-(benzylselanyl)butanoic acid
methyl iodide
Seleno-L-methionine
Conditions | Yield |
---|---|
(i) Na, liq. NH3, (ii) /BRN= 969135/, NH4Cl; Multistep reaction; |
Seleno-L-methionine
Conditions | Yield |
---|---|
at 39℃; aminoacylase; |
2-Acetylamino-4-methylselanyl-butyric acid
Seleno-L-methionine
Conditions | Yield |
---|---|
With acylase from Aspergillus oryzae; water at 20 - 37℃; |
Seleno-L-methionine
Conditions | Yield |
---|---|
With pig kidney acylase I In phosphate buffer at 37℃; for 0.166667h; pH=7.4; Enzyme kinetics; Deacetylation; |
Conditions | Yield |
---|---|
With E. coli cobalamin-independent methionine synthase (2-649) Enzyme kinetics; Methylation; |
Conditions | Yield |
---|---|
With E. coli cobalamin-dependent methionine synthase (2-649) Enzyme kinetics; Methylation; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 84.1 percent / 4 h / 15 - 30 °C 2: H2O, acylase from Aspergillus oryzae / 20 - 37 °C View Scheme |
L-benzyl N-t-butoxycarbonylselenomethioninate
Seleno-L-methionine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 100 percent / NaOH / dioxane; H2O / 0.5 h / Ambient temperature 2: 96 percent / trifluoroacetic acid / CH2Cl2 / 0.5 h / Ambient temperature View Scheme |
Seleno-L-methionine
Conditions | Yield |
---|---|
In methanol; water at 20℃; for 0.166667h; Alkaline conditions; |
L-homoserine lactone hydrochloride
sodium methylselenide
Seleno-L-methionine
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide for 2h; Inert atmosphere; Reflux; | n/a |
Seleno-L-methionine
Conditions | Yield |
---|---|
With hydrogen bromide In tetrahydrofuran; 1,4-dioxane Inert atmosphere; Green chemistry; | 8.99 g |
Conditions | Yield |
---|---|
Stage #1: L,L-selenohomocystine With sodium tetrahydroborate; ethanol at 35℃; for 5h; Inert atmosphere; Stage #2: dimethyl sulfoxide at 45℃; for 1.5h; Temperature; Reagent/catalyst; Inert atmosphere; | 43.4 g |
di-tert-butyl dicarbonate
Seleno-L-methionine
N-Boc-L-selenomethionine
Conditions | Yield |
---|---|
Stage #1: Seleno-L-methionine With sodium hydrogencarbonate In 1,4-dioxane; water for 0.333333h; Cooling with ice; Stage #2: di-tert-butyl dicarbonate In 1,4-dioxane; water at 20℃; for 13h; Cooling with ice; | 98% |
With sodium hydroxide In 1,4-dioxane; water at 20℃; for 20h; | |
With sodium hydrogencarbonate In 1,4-dioxane; water at 25℃; | |
With sodium hydrogencarbonate In 1,4-dioxane; water at 20℃; for 12h; |
Seleno-L-methionine
2,4-Dinitrofluorobenzene
N-(2,4-dinitrophenyl)seleno-L-methionine
Conditions | Yield |
---|---|
With sodium carbonate In tetrahydrofuran at 20 - 40℃; for 9h; | 90% |
Conditions | Yield |
---|---|
With acetic anhydride for 1h; | 88% |
Seleno-L-methionine
Conditions | Yield |
---|---|
With dihydrogen peroxide for 0.25h; cooling; | 85% |
With Sprague-Dawley rat liver microsomes; NADPH; catalase In phosphate buffer for 0.333333h; pH=7.4; Enzyme kinetics; Further Variations:; Reagents; | |
With dihydrogen peroxide In water |
Seleno-L-methionine
Conditions | Yield |
---|---|
In acetone at 0℃; for 8.5h; | 85% |
succinic acid anhydride
Seleno-L-methionine
(S)-4-(1-carboxy-3-(methylselanyl)propylamino)-4-oxobutanoic acid
Conditions | Yield |
---|---|
With sulfuric acid In water; ethyl acetate for 1h; Heating / reflux; | 84.14% |
Seleno-L-methionine
Conditions | Yield |
---|---|
Stage #1: Seleno-L-methionine With potassium cyanate In water at 80 - 94℃; for 2h; Stage #2: With hydrogenchloride In water at 20℃; | 83.65% |
Conditions | Yield |
---|---|
With hydrogenchloride for 18h; | 83% |
Conditions | Yield |
---|---|
With sodium hydroxide In water pH=6; | 78% |
1-ethoxy-4-iodobenzene
Seleno-L-methionine
1-Ethoxy-4-methylselanyl-benzene
Conditions | Yield |
---|---|
With potassium tert-butylate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; palladium dichloride In 5,5-dimethyl-1,3-cyclohexadiene at 130℃; for 12h; | 78% |
Conditions | Yield |
---|---|
Stage #1: Seleno-L-methionine With potassium hydroxide Sonication; Cooling with ice; Stage #2: n-dodecanoyl chloride In tetrahydrofuran at 50℃; for 4h; pH=12; Temperature; pH-value; Cooling with ice; | 77.34% |
Seleno-L-methionine
5'-deoxy-5'-chloroadenosine
Se-adenosyl-L-selenohomocysteine
Conditions | Yield |
---|---|
Stage #1: Seleno-L-methionine With ammonia; sodium at -35℃; for 1.25h; Inert atmosphere; Stage #2: 5'-deoxy-5'-chloroadenosine In methanol at 50℃; for 24h; Inert atmosphere; | 74% |
Conditions | Yield |
---|---|
at 50℃; for 24h; Cooling with acetone-dry ice; Inert atmosphere; | 74% |
Conditions | Yield |
---|---|
Stage #1: Seleno-L-methionine With ammonia; sodium Inert atmosphere; Cooling with acetone-dry ice; Stage #2: 5'-deoxy-5'-chloroadenosine In methanol at 50℃; for 24h; Inert atmosphere; | 74% |
Conditions | Yield |
---|---|
Stage #1: Seleno-L-methionine With potassium hydroxide Sonication; Cooling with ice; Stage #2: (Z)-9-octadecenoyl chloride In tetrahydrofuran at 25℃; for 2h; pH=9 - 10; Cooling with ice; | 68.77% |
Seleno-L-methionine
L-selenohomocysteine
Conditions | Yield |
---|---|
With ammonia; sodium at -78℃; for 1.33333h; | 62% |
With ammonia; sodium at -80℃; for 0.833333h; demethylation; | |
With ammonia; sodium at -80℃; for 1h; Inert atmosphere; Darkness; | |
With ammonia; sodium at -60℃; for 1h; |
Conditions | Yield |
---|---|
Stage #1: Seleno-L-methionine; isopropyl alcohol With sulfuric acid at 0℃; for 48h; Heating / reflux; Stage #2: With ammonia In water; isopropyl alcohol | 52.61% |
Conditions | Yield |
---|---|
Stage #1: Seleno-L-methionine; 4-chlorobenzaldehyde In methanol at 20℃; for 0.166667h; Ugi Condensation; Stage #2: tert-butylamine With sodium azide In methanol at 20℃; for 12h; Ugi Condensation; | 51% |
Conditions | Yield |
---|---|
With HNO3 In water byproducts: Se; Se-compound added to H2O, pH adjusted by HNO3 to 0.5, CH3HgOH added, stirred for 3.5 h; filtered, solvent evapd. in vac., kept under Ar at 4°C; elem. anal.; | 49% |
Seleno-L-methionine
benzyl bromide
A
(2S)-2-amino-4-(benzylselanyl)butanoic acid
B
L-selenohomocysteine
Conditions | Yield |
---|---|
With hydrogenchloride In water at 100℃; for 12h; | A 7% B 38% |
Seleno-L-methionine
isopropyl bromide
(2S)-2-amino-4-(propan-2-ylselanyl)butanoic acid
Conditions | Yield |
---|---|
With hydrogenchloride In water at 100℃; for 12h; | 9% |
With hydrogenchloride In water at 100℃; for 12h; | 9% |
Seleno-L-methionine
benzyl bromide
(2S)-2-amino-4-(benzylselanyl)butanoic acid
Conditions | Yield |
---|---|
With hydrogenchloride In water at 100℃; for 12h; | 7% |
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