Our 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:5255-17-4
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryHenan Tianfu Chemical Co., Ltd. is located in Zhengzhou High-tech Development Zone with import and export license. We passed ISO 9001:2008 in 2009, and won "High-tech Enterprise" by provincial government in 2013.The objective of the com
Cas:5255-17-4
Min.Order:1 Kilogram
FOB Price: $1000.0
Type:Lab/Research institutions
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:5255-17-4
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
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 according to the contract research and development services for the fine chemicals, ph
Cas:5255-17-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry1.In No Less 10 years exporting experience. you 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 Specializ
Cas:5255-17-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiry3BETA-HYDROXY-DELTA5-CHOLENIC ACID CAS:5255-17-4 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
Cas:5255-17-4
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
Cas:5255-17-4
Min.Order:1 Kilogram
Negotiable
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:5255-17-4
Min.Order:0
Negotiable
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
Cas:5255-17-4
Min.Order:10 Kilogram
Negotiable
Type:Trading Company
inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
Cas:5255-17-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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:5255-17-4
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
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:5255-17-4
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiryProduct name: 3beta-Hydroxy-Delta5-Cholenic Acid CAS No.:5255-17-4 Molecule Formula:C24H38O3 Molecule Weight:374.56 Purity: 98.0% Package: 25kg/drum Description:White powder Manufacture Standards:Enterprise Standard TESTING ITEMS
Cas:5255-17-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryfactory?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
Cas:5255-17-4
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
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:5255-17-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
Cas:5255-17-4
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryWe 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
Cas:5255-17-4
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
inquiryStock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:5255-17-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryJinhua huayi chemical co., ltd. is dedicated to the development, production and marketing of chemicals. On the basis of equality and mutual benefit, and under the principle of customer first, credit first, quality first, we are ready to join hands
Cas:5255-17-4
Min.Order:100 Gram
Negotiable
Type:Lab/Research institutions
inquiryWhy is SINOWAY:1) Specialized in pharmaceutical and healthcare industrial since 19872) ISO 9001:2015 & SGS audited supplier . 3) Accept various payment terms : T.T 30-60 days.4) We have warehouse in USA with quickly shipment . Application:API
Cas:5255-17-4
Min.Order:0
Negotiable
Type:Trading Company
inquiryAcmec 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
Cas:5255-17-4
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
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
TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp
1. Product advantages? High purity, all above 98.5%, no impurities after dissolution? We will test each batch to ensure quality? OEM and private brand services designed for free? Various cap colors available? We can also provide MT1 peptide powder2.
Cas:5255-17-4
Min.Order:0
Negotiable
Type:Trading Company
inquiryAnsciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
Cas:5255-17-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWe product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Application:Pharm intermediate
Cas:5255-17-4
Min.Order:0
Negotiable
Type:Trading Company
inquiryTIANFU-CHEM - 3BETA-HYDROXY-DELTA5-CHOLENIC ACID Application:TIANFU-CHEM - 3BETA-HYDROXY-DELTA5-CHOLENIC ACID
Cas:5255-17-4
Min.Order:0
Negotiable
Type:Other
inquirybest seller Application:API
Cas:5255-17-4
Min.Order:0
Negotiable
Type:Trading Company
inquiryChol-5-en-24-oic acid,3-hydroxy-, (3b)-Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
3β-acetoxy-5-cholenic acid
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
With sodium hydroxide In methanol for 4h; Ambient temperature; | 89.6% |
methyl 5-cholenoate
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
With water; lithium hydroxide In tetrahydrofuran Inert atmosphere; | 80% |
methyl 3α,6α-ditosyloxy-5β-cholan-24-oate
potassium acetate
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
With N,N-dimethyl-formamide Erwaermen des Reaktionsprodukts mit methanol. KOH; |
3β-acetoxy-5α,6β-dibromocholestane
A
prasterone acetate
B
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
With chromium(VI) oxide; acetic acid Erwaermen des Reaktionsprodukts mit Zink-Pulver und Essigsaeure und Erwaermen des erhaltenen Reaktionsprodukts mit methanol. Kalilauge; | |
With chromium(VI) oxide; acetic acid Erwaermen des Reaktionsprodukts mit Zink-Pulver und Essigsaeure und Erwaermen des erhaltenen Reaktionsprodukts mit wss. Natronlauge; |
3β-hydroxy-24-nor-chol-5-ene-23,23-dicarboxylic acid
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
at 200℃; |
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
Stage #1: methyl hyodeoxycholate With pyridine; p-toluenesulfonyl chloride Stage #2: With potassium acetate In N,N-dimethyl-formamide at 110℃; Stage #3: With potassium hydroxide In methanol at 110℃; |
3β-acetoxy-Δ5-cholenic aldehyde
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 74.2 percent / chromic acid / tetrahydrofuran / 0.17 h / 0 °C 2: 89.6 percent / NaOH (10percent) / methanol / 4 h / Ambient temperature View Scheme |
24,24-ethylenedioxy-Δ5-chol-3β,20-diol
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 94.1 percent / pyridine / 14 h / Ambient temperature 2: 88.5 percent / phosphoryl chloride / pyridine / 16 h / Ambient temperature 3: 96.8 percent / H2 / PtO2 / ethanol / 3 h / Ambient temperature 4: 91.7 percent / HCl (10percent) / acetone / 3 h / Ambient temperature 5: 74.2 percent / chromic acid / tetrahydrofuran / 0.17 h / 0 °C 6: 89.6 percent / NaOH (10percent) / methanol / 4 h / Ambient temperature View Scheme |
24,24-ethylenedioxy-Δ5-chola-3β-acetate
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 91.7 percent / HCl (10percent) / acetone / 3 h / Ambient temperature 2: 74.2 percent / chromic acid / tetrahydrofuran / 0.17 h / 0 °C 3: 89.6 percent / NaOH (10percent) / methanol / 4 h / Ambient temperature View Scheme |
3β-acetoxy-24,24-ethylenedioxychol-Δ5,20(22)-diene
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 96.8 percent / H2 / PtO2 / ethanol / 3 h / Ambient temperature 2: 91.7 percent / HCl (10percent) / acetone / 3 h / Ambient temperature 3: 74.2 percent / chromic acid / tetrahydrofuran / 0.17 h / 0 °C 4: 89.6 percent / NaOH (10percent) / methanol / 4 h / Ambient temperature View Scheme |
24,24-ethylenedioxy-20-hydroxy-Δ5-chola-3β-acetate
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 88.5 percent / phosphoryl chloride / pyridine / 16 h / Ambient temperature 2: 96.8 percent / H2 / PtO2 / ethanol / 3 h / Ambient temperature 3: 91.7 percent / HCl (10percent) / acetone / 3 h / Ambient temperature 4: 74.2 percent / chromic acid / tetrahydrofuran / 0.17 h / 0 °C 5: 89.6 percent / NaOH (10percent) / methanol / 4 h / Ambient temperature View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 2: DMF / Erwaermen des Reaktionsprodukts mit methanol. KOH View Scheme |
3β-acetoxy-23,24-bisnor-chol-5-en-22-yl p-toluenesulfonate
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: xylene / Erwaermen des Reaktionsprodukts mit KOH in Methanol und Isopropylalkohol 2: 200 °C View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: diethyl ether; glacial acetic acid; bromine 2: chromium (VI)-oxide; water containing acetic acid / Erwaermen des Reaktionsprodukts mit Zink-Pulver und Essigsaeure und Erwaermen des erhaltenen Reaktionsprodukts mit wss. Natronlauge View Scheme | |
Multi-step reaction with 2 steps 1: glacial acetic acid; bromine 2: chromium (VI)-oxide; water containing acetic acid / Erwaermen des Reaktionsprodukts mit Zink-Pulver und Essigsaeure und Erwaermen des erhaltenen Reaktionsprodukts mit wss. Natronlauge View Scheme |
3β-hydroxy-5-cholenoic acid
acetic anhydride
3β-acetoxy-5-cholenic acid
Conditions | Yield |
---|---|
With pyridine | 100% |
With acetic acid |
diazomethane
3β-hydroxy-5-cholenoic acid
methyl 5-cholenoate
Conditions | Yield |
---|---|
In tetrahydrofuran; diethyl ether at 20℃; for 0.666667h; | 100% |
98% | |
In diethyl ether; chloroform for 2.5h; | 77% |
methanol
3β-hydroxy-5-cholenoic acid
tert-butyldimethylsilyl chloride
3β-(t-butyldimethylsilyloxy)-5-cholenic acid methyl ester
Conditions | Yield |
---|---|
Stage #1: methanol; 3β-hydroxy-5-cholenoic acid With toluene-4-sulfonic acid at 60℃; Stage #2: tert-butyldimethylsilyl chloride With 1H-imidazole; dmap In tetrahydrofuran; N,N-dimethyl-formamide at 20℃; for 1h; | 99% |
tert-butyl N-[2-[2-[2-[2-(2-aminoethoxy)ethoxy]ethoxy]ethoxy]ethyl]carbamate
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; 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 20℃; for 3h; | 95% |
Conditions | Yield |
---|---|
With 5%-palladium/activated carbon; hydrogen In tetrahydrofuran; methanol at 20℃; for 48h; Inert atmosphere; | 93% |
Multi-step reaction with 3 steps 1: hydrogen chloride 2: acetic acid; platinum / Hydrogenation 3: methanol. KOH-solution View Scheme |
3β-hydroxy-5-cholenoic acid
3β-hydroxy-5-cholenamide
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With triethylamine; isobutyl chloroformate In tetrahydrofuran at 0℃; for 0.166667h; Stage #2: With ammonia In tetrahydrofuran; water at 0 - 20℃; | 93% |
3,4-dihydro-2H-pyran
3β-hydroxy-5-cholenoic acid
3β-(Tetrahydropyranyloxy)chol-5-en-24-oic acid 24-tetrahydropyranyl ester
Conditions | Yield |
---|---|
With pyridinium p-toluenesulfonate In dichloromethane Ambient temperature; | 92% |
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 48h; | 90% |
3β-hydroxy-5-cholenoic acid
N,O-dimethylhydroxylamine*hydrochloride
5-cholenic acid-3β-ol N-methoxy-N-methylamide
Conditions | Yield |
---|---|
With 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; Inert atmosphere; | 89% |
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 3h; | 85% |
Stage #1: 3β-hydroxy-5-cholenoic acid With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In tetrahydrofuran at 20℃; for 1h; Stage #2: N,O-dimethylhydroxylamine*hydrochloride In tetrahydrofuran at 20℃; for 6h; | 57% |
Stage #1: 3β-hydroxy-5-cholenoic acid With N-ethyl-N,N-diisopropylamine; HATU In tetrahydrofuran at 20℃; for 1h; Stage #2: N,O-dimethylhydroxylamine*hydrochloride In tetrahydrofuran at 20℃; for 6h; | 57% |
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With triethylamine; isobutyl chloroformate In tetrahydrofuran at 0℃; for 0.166667h; Stage #2: diethylamine In tetrahydrofuran at 0 - 20℃; | 88% |
Conditions | Yield |
---|---|
In water at 90 - 95℃; for 3h; | 87% |
tert-butyl 2-(2-(2-(2-(2-(2-(2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethylcarbamate
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; 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 20℃; for 3h; | 86% |
3β-hydroxy-5-cholenoic acid
dibutylamine
N,N-di-n-butyl-3β-hydroxy-5-cholenamide
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With triethylamine; isobutyl chloroformate In tetrahydrofuran at 0℃; for 0.166667h; Stage #2: dibutylamine In tetrahydrofuran at 0 - 20℃; | 85% |
L-β-homo-tryptophan
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.416667h; Inert atmosphere; Stage #2: L-β-homo-tryptophan In N,N-dimethyl-formamide at 0 - 20℃; for 16h; Inert atmosphere; chemoselective reaction; | 85% |
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; 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 20℃; for 3h; | 85% |
3β-hydroxy-5-cholenoic acid
dimethyl amine
Cholenic acid dimethylamide
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With triethylamine; isobutyl chloroformate In tetrahydrofuran at 0℃; for 0.166667h; Stage #2: dimethyl amine In tetrahydrofuran at 0 - 20℃; | 84% |
3β-hydroxy-5-cholenoic acid
Conditions | Yield |
---|---|
With 4-methyl-morpholine In dichloromethane; N,N-dimethyl-formamide at 20℃; for 2h; | 84% |
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.416667h; Inert atmosphere; Stage #2: L-methionine In N,N-dimethyl-formamide at 0 - 20℃; for 16h; Inert atmosphere; chemoselective reaction; | 83% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; | 82% |
With diethyl ether; silver(l) oxide | |
With sodium hydroxide 1.) MeOH, 2.) DMF; Yield given. Multistep reaction; |
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 18h; | 82% |
3β-hydroxy-5-cholenoic acid
di-n-propylamine
N,N-di-n-propyl-3β-hydroxy-5-cholenamide
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With triethylamine; isobutyl chloroformate In tetrahydrofuran at 0℃; for 0.166667h; Stage #2: di-n-propylamine In tetrahydrofuran at 0 - 20℃; | 82% |
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.416667h; Inert atmosphere; Stage #2: D-tryptophan In N,N-dimethyl-formamide at 0 - 20℃; for 16h; Inert atmosphere; chemoselective reaction; | 82% |
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With triethylamine; isobutyl chloroformate In tetrahydrofuran at 0℃; for 0.166667h; Stage #2: methylamine In tetrahydrofuran at 0 - 20℃; | 81% |
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.416667h; Inert atmosphere; Stage #2: L-phenylalanine In N,N-dimethyl-formamide at 0 - 20℃; for 16h; Inert atmosphere; chemoselective reaction; | 81% |
3β-hydroxy-5-cholenoic acid
L-1-naphthylalanine
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.416667h; Inert atmosphere; Stage #2: L-1-naphthylalanine In N,N-dimethyl-formamide at 0 - 20℃; for 16h; Inert atmosphere; chemoselective reaction; | 81% |
3β-hydroxy-5-cholenoic acid
5-bromo-DL-tryptophan
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.416667h; Inert atmosphere; Stage #2: 5-bromo-DL-tryptophan In N,N-dimethyl-formamide at 0 - 20℃; for 16h; Inert atmosphere; chemoselective reaction; | 80% |
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.416667h; Inert atmosphere; Stage #2: L-Tryptophan In N,N-dimethyl-formamide at 0 - 20℃; for 16h; Inert atmosphere; chemoselective reaction; | 79% |
3β-hydroxy-5-cholenoic acid
1-methyl-L-tryptophan
Conditions | Yield |
---|---|
Stage #1: 3β-hydroxy-5-cholenoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.416667h; Inert atmosphere; Stage #2: 1-methyl-L-tryptophan In N,N-dimethyl-formamide at 0 - 20℃; for 16h; Inert atmosphere; chemoselective reaction; | 77% |
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View