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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
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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 manufactu
Cas:625-72-9
Min.Order:1 Kilogram
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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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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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inquiry1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures
Cas:625-72-9
Min.Order:1 Kilogram
FOB Price: $80.0 / 100.0
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inquiryour strengths: 1: Fast and guaranteed shipment (TNT;EMS;FEDEX;DHL;UPS;EUB, special line) 2: Various payment items accepted (Btc; MoneyGram; WU) 3: Valued package (Paraffin coating; Double aluminum foil bag; Vacuum packaging) 4: Efficient delivery
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 o
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inquiryZhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed
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Min.Order:1 Kilogram
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inquiry1.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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Min.Order:1 Metric Ton
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inquiryOur advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can be
Cas:625-72-9
Min.Order:1 Gram
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inquiryR & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou
Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
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inquiryhigh quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
(R)-3-hydroxybutyric acidAppearance:detailed see specifications Storage:Keep away of light, cool place Package:25kg/drum;200kg/drum Application:An important raw material and intermediate used in Organic Synthesis, Pharmaceuticals Transportation:Sea/a
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inquirygood quality, competitive price, thoughtful after sale serviceAppearance:White to Off-White Solid Storage:Keep it in dry,shady and cool place Package:as your requirement Application:Pharma;Industry;Agricultural;chemical reaserch Transportation:by Sea
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inquiryWe are committed to providing our customers with the best products and services at the most competitive prices.Appearance:clear oily liquid Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use as prim
Supply top quality products with a reasonable price Application:api
(R)-3-Hydroxybutyric acidAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
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inquiryThe factory supplies Application:manufacturing supplies
Good Quality Application:Medical or chemical
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Best Seller, High Quality, Competitive Price, Fast Delivery, Quick ResponseAppearance:powder, or liquid Storage:Stored in room temperature, ventilated place Package:Bottle, barrel, cargo, container, etc. Application:Pharmaceuticals, intermediates, AP
1.Professional synthesis laboratory and production base. 2.Strong synthesis team and service team. 3.Professional data management system. 4.We provide the professional test date and product information ,ex. HNMR ,CNMR,FNMR, HPLC/G
Cas:625-72-9
Min.Order:10 Milligram
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Type:Lab/Research institutions
inquiryChangzhou Extraordinary Pharmatech co., LTD. As a leading chemical manufacturer and supplier in China.DAS authentication is passed.We can provide the popular precursor chemicals, we have our own strong R & D team, have our own laboratories and fa
Cas:625-72-9
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryPrice, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right
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inquiryYinghao Pharm products include: leader molecule, heterocyclic compounds,chiral compounds, photoelectric materials, biochemical reagents etc. For example:benzene, pyrimidine, boricacid,pyridine, pyrazole, imidazole, pyrrole, fluorine and other derivat
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inquiryfactory,reasonable price Appearance:detailed see specifications Storage:Store in dry, dark and ventilated place. Package:according to the clients requirement Application:pharmaceutical intermediates Transportation:by courier,air or sea Port:S
Conditions | Yield |
---|---|
Stage #1: Methyl (R)-3-hydroxybutyrate With potassium hydroxide In water at 0 - 20℃; for 48h; Inert atmosphere; Stage #2: With hydrogenchloride In water pH=1; Inert atmosphere; | 94% |
With potassium hydroxide In water at 4℃; for 480h; | 91% |
Stage #1: Methyl (R)-3-hydroxybutyrate With potassium hydroxide; water at 0℃; for 25.5h; Stage #2: With hydrogenchloride; water at 5℃; | 87% |
sodium (R)-3-hydroxybutyrate
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With DOWEX 50x8-200 ion-exchange resin In methanol | 94% |
With hydrogenchloride; water pH=1; | 69% |
With hydrogenchloride; water |
Ethyl (R)-3-hydroxybutanoate
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With potassium hydroxide at 0℃; for 24h; | 93% |
With sodium hydroxide In water at 10℃; for 6h; | 85% |
With potassium hydroxide for 12h; Ambient temperature; |
(3'R,4S)-3-(3'-hydroxybutanoyl)-4-(1-methylethyl)-2-oxazolidinone
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With lithium hydroxide; dihydrogen peroxide In tetrahydrofuran at 20℃; for 1h; | 62% |
With potassium hydroxide In methanol at 0℃; for 0.75h; |
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In methanol; 1,2-dichloro-ethane for 15h; Heating; | 54% |
ethyl 3-hydroxybutyrate
A
(R)-3-hydroxybutyric acid
B
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With sodium hydroxide In water at 30℃; pH=6.9; | A n/a B 36.4% |
Conditions | Yield |
---|---|
With hydrogenchloride |
(S)‐3‐chlorobutanoic acid
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With water |
Conditions | Yield |
---|---|
With cis-nitrous acid Verseifung des Reaktionsproduktes; |
(S)-3-chloro-butyric acid methyl ester; methyl ester of/the/ dextrorotatory β-chloro-butyric acid
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With water |
(R)-(-)-3-acetoxybutyric acid
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With potassium hydroxide |
Conditions | Yield |
---|---|
Vergaerung auch von anderen Zuckern durch Bac.megatherium (oder andere Mikroorganismen, z.B.Bac.cereus, Bac.polymyxa) bei 30grad und Autolyse der entstandenen intracellulaeren Polysaeure; |
Conditions | Yield |
---|---|
bei der Durchstroemung der ueberlebenden Hundeleber; | |
in tierischen Geweben unter anaeroben Bedingungen; | |
With hydrogen in Gegenwart von zellfreies Enzymextrakt aus Clostridium kluyveri; |
Conditions | Yield |
---|---|
in tierischen Geweben unter anaeroben Bedingungen; |
Conditions | Yield |
---|---|
bei der Leberdurchstroemung; |
Conditions | Yield |
---|---|
bei der Leberdurchstroemung; |
Conditions | Yield |
---|---|
bei der Leberdurchstroemung; |
3-Hydroxybutyric acid
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
durch Pilze; |
Conditions | Yield |
---|---|
bei der Leberdurchstroemung; |
Conditions | Yield |
---|---|
Multistep reaction; |
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
(i) O3, CHCl3, (ii) Ag2O, H2O; Multistep reaction; |
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With sodium periodate |
1.3-butanediol
A
(S)-3-Hydroxybutanoic Acid
B
(R)-3-hydroxybutyric acid
C
2-acetoacetic acid
Conditions | Yield |
---|---|
With D-glucose; calcium carbonate at 27℃; for 48h; Hansenula anomala IFO 0195; Yield given. Yields of byproduct given. Title compound not separated from byproducts; | |
With D-glucose; calcium carbonate at 27℃; for 48h; Product distribution; Hansenula anomala IFO 0195, potato-dextrose-agar; other yeasts, influence of glucose, fructose, temperature: stereoselectivity; also with optically active 1,3-butanediol; |
2-acetoacetic acid
A
(S)-3-Hydroxybutanoic Acid
B
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With potassium dihydrogenphosphate; baker's yeast; D-glucose In water at 28℃; for 9h; Yield given. Yields of byproduct given. Title compound not separated from byproducts; | |
With potassium dihydrogenphosphate; baker's yeast; D-glucose In water at 28℃; for 9h; Product distribution; other times; other β-keto acids investigated; | |
With diisopinocampheylborane In tetrahydrofuran at 20℃; for 32h; Title compound not separated from byproducts.; |
ethyl acetoacetate
A
(S)-3-Hydroxybutanoic Acid
B
(R)-3-hydroxybutyric acid
C
Ethyl (R)-3-hydroxybutanoate
D
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With Halobacterium halobium; pepton; potassium chloride; water; sodium citrate; magnesium sulfate; sodium chloride at 40℃; for 120h; Irradiation; Yields of byproduct given. Title compound not separated from byproducts; | |
With Halobacterium halobium; pepton; potassium chloride; sodium citrate; magnesium sulfate; sodium chloride In water at 40℃; for 120h; Irradiation; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
(4R,6S,7S,10R)-7-Isopropyl-4,10-dimethyl-1,5-dioxa-spiro[5.5]undecan-2-one
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With hydrogenchloride In diethyl ether Ambient temperature; |
(R)-3-Acetoxybuttersaeure-ethylester
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With sodium hydroxide; water 1.) room temp., 2 d; 2.) 4 deg C, 1 d; Yield given. Multistep reaction; |
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With potassium hydroxide In methanol at 50℃; for 0.0833333h; |
diazomethane
(R)-3-hydroxybutyric acid
Methyl (R)-3-hydroxybutyrate
Conditions | Yield |
---|---|
In diethyl ether | 100% |
In methanol; diethyl ether at -10℃; | 76% |
(R)-3-hydroxybutyric acid
tert-butyldimethylsilyl chloride
3-(R)-t-butyldimethylsilyloxybutanoic acid
Conditions | Yield |
---|---|
With dmap; triethylamine In dichloromethane at 0 - 20℃; for 48h; Inert atmosphere; | 100% |
With dmap; triethylamine In dichloromethane for 36h; Ambient temperature; | 84% |
(R)-3-hydroxybutyric acid
triisopropylsilyl trifluoromethanesulfonate
methyl 3(R)-<oxy>butanoate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 16h; | 100% |
Conditions | Yield |
---|---|
Stage #1: (R)-3-hydroxybutyric acid In dichloromethane at 20℃; for 1h; Inert atmosphere; Stage #2: 2-Methoxypropene With Amberlyst 15H In dichloromethane at 20℃; for 2h; Inert atmosphere; | 98.8% |
chloro-trimethyl-silane
(R)-3-hydroxybutyric acid
trimethylsilyl (R)-3-<(trimethylsilyl)oxy>butyrate
Conditions | Yield |
---|---|
With triethylamine In dichloromethane for 48h; Ambient temperature; | 94% |
In tetrahydrofuran Heating; |
(R)-3-hydroxybutyric acid
L-α-amino-N-(benzyloxy)caprolactam
benzyl cobactin T
Conditions | Yield |
---|---|
With N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline In tetrahydrofuran at 50℃; for 22h; | 79% |
(R)-3-hydroxybutyric acid
allyl alcohol
(R)-3-hydroxybutanoic acid allylester
Conditions | Yield |
---|---|
With sulfuric acid In benzene for 4h; Heating; | 74% |
(R)-3-hydroxybutyric acid
Octanal
(2R,6R)-2-heptyl-6-methyl-1,3-dioxan-4-on
Conditions | Yield |
---|---|
With Dowex 50*8; pyridinium p-toluenesulfonate In dichloromethane Heating; | 71% |
(R)-3-hydroxybutyric acid
Octanal
A
(2R,6R)-2-heptyl-6-methyl-1,3-dioxan-4-on
B
(2S,6R)-2-Heptyl-6-methyl-[1,3]dioxan-4-one
Conditions | Yield |
---|---|
With pyridinium p-toluenesulfonate In dichloromethane Yields of byproduct given; | A 71% B n/a |
(R)-3-hydroxybutyric acid
benzyl alcohol
(R)-3-hydroxybutanoic benzyl ester
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In benzene Heating; | 71% |
Conditions | Yield |
---|---|
With 4-methyl-morpholine; 1-hydroxy-7-aza-benzotriazole; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide In chloroform at 20℃; for 1h; | 70% |
(R)-3-hydroxybutyric acid
(S)-2-(benzyloxy)propanal
(2R,6R)-2-<1-(S)-benzyloxyethyl>-6-methyl-1,3-dioxan-4-one
Conditions | Yield |
---|---|
With pyridinium p-toluenesulfonate In dichloromethane Heating; | 69% |
3-phenyl-propionaldehyde
(R)-3-hydroxybutyric acid
(2R,6R)-6-methyl-2-(2'-phenylethyl)-1,3-dioxan-4-on
Conditions | Yield |
---|---|
With Dowex 50*8; pyridinium p-toluenesulfonate In dichloromethane Heating; | 66% |
With pyridinium p-toluenesulfonate In dichloromethane Heating; |
3-phenyl-propionaldehyde
(R)-3-hydroxybutyric acid
A
(2R,6R)-6-methyl-2-(2'-phenylethyl)-1,3-dioxan-4-on
B
(2S,6R)-6-Methyl-2-phenethyl-[1,3]dioxan-4-one
Conditions | Yield |
---|---|
With pyridinium p-toluenesulfonate In dichloromethane Yields of byproduct given; | A 66% B n/a |
nonan-1-al
(R)-3-hydroxybutyric acid
A
(2R,6R)-6-methyl-2-octyl-1,3-dioxan-4-on
B
(2S,6R)-6-methyl-2-octyl-1,3-dioxan-4-on
Conditions | Yield |
---|---|
With Dowex 50*8; pyridinium p-toluenesulfonate In dichloromethane Heating; | A 66% B n/a |
With pyridinium p-toluenesulfonate In dichloromethane Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
(R)-3-hydroxybutyric acid
Conditions | Yield |
---|---|
With triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 40℃; for 1h; | 65% |
(R)-3-hydroxybutyric acid
[(S)-1-(tert-Butyl-diphenyl-silanyloxy)-2-oxo-azepan-3-yl]-carbamic acid benzyl ester
(R)-N-[(S)-1-(tert-Butyl-diphenyl-silanyloxy)-2-oxo-azepan-3-yl]-3-hydroxy-butyramide
Conditions | Yield |
---|---|
With dmap; 4-(dimethylamino)pyridine hydrochloride; dicyclohexyl-carbodiimide In chloroform at 40℃; for 0.5h; | 63% |
(S)-3-amino-1-(benzyloxy)azepan-2-one hydrobromide
(R)-3-hydroxybutyric acid
benzyl cobactin T
Conditions | Yield |
---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In acetonitrile at 22℃; for 25h; Inert atmosphere; | 62% |
(R)-3-hydroxybutyric acid
isobutyraldehyde
A
(2R,6R)-2-isopropyl-6-methyl-1,3-dioxan-4-on
B
(2S,6R)-2-isopropyl-6-methyl-1,3-dioxan-4-on
Conditions | Yield |
---|---|
With pyridinium p-toluenesulfonate In benzene Yields of byproduct given; | A 61% B n/a |
With Amberlyst; Dowex 50*8; pyridinium p-toluenesulfonate In benzene Heating; | A 61% B n/a |
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