Our service: 1.We have experience in exporting Pharmaceutical intermediates . 2.Professional packing with professional materials 3. We have products in stock, and we will deliver them soon when your PO arrived. Meanwhile we will give you the trackin
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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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inquiryReason for Choosing us: 1): Superior Quality and Competitive Price: Our company is a renowned pharmaceutical manufacturer with more than 15 years experiences in China and all powders are supplying from our factory directly. 2): Fast ,Sa
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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
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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:855-19-6
Min.Order:1 Gram
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Type:Manufacturers
inquiryADVANTAGE: 1. More than 3,000 Chinese medicine reference substances / standard products available from stock, issued on the same day, multiple cities can be delivered the next day 2. The products are provided with COA, HPLC, NMR, quality assurance,
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
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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&
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inquiryOur advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva
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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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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 email in time prod
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inquiry1. 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 ♦ W
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inquiryProduct Name 4-Chlorotestosterone acetate CAS No. 855-19-6 MF C21H29ClO3 MW 364.91
1. 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:Store in sealed containers at cool & dr
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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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inquiryBeluga chemical professional supply P2NP CAS:705-60-2 1-Phenyl-2-nitropropene Why choose Beluga chemical 1. Beluga Chemical has a professional RESEARCH and development team and strong technical force to ensure technical support and research capab
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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 &
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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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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
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inquiryFactory direct sales, accept customization. Kind Pharma has its own laboratory, we can do analytical testing for API (Active Pharmaceutical Ingredient), pharmaceutical intermediate, pesticide intermediate, additive and other chemical products, so it
J&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
Our Advantage & Service 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. 2 Professional R&D
Cas:855-19-6
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Type:Trading Company
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:855-19-6
Min.Order:10 Gram
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inquiryWe are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov
Cas:855-19-6
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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:855-19-6
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:855-19-6
Min.Order:1 Gram
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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,
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inquiryAppearance : nearly white crystalloid powder white crystalloid powder Melting Point : 221.0~230.0℃ 224.0-230℃ Loss on drying : 0.5%max 0.34% Specific Rotation : +114°~+122° +118° Assay(by GLC) : 9
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Min.Order:0 Metric Ton
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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:855-19-6
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:855-19-6
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inquiryConditions | Yield |
---|---|
Stage #1: testosterone acetate With 3,3-dimethyldioxirane In acetone at 20℃; for 8h; Epoxidation; Stage #2: With Amberlyst 15; sodium chloride In acetone at 20℃; for 12h; Chlorination; | 89% |
With pyridine; sulfuryl dichloride for 1h; Product distribution; Ambient temperature; other steroids; | |
With pyridine; sulfuryl dichloride for 1h; Ambient temperature; | |
Multi-step reaction with 2 steps 1: N-chloro-succinimide, HN3 / CHCl3; 2-methyl-propan-2-ol 2: SiO2 / benzene View Scheme | |
Multi-step reaction with 2 steps 1: N-chloro-succinimide, HN3 / CHCl3; 2-methyl-propan-2-ol 2: SiO2 / benzene View Scheme |
Conditions | Yield |
---|---|
With hydrogenchloride; acetic acid |
Conditions | Yield |
---|---|
(i) H2SO4, MeOH, (ii) /BRN= 385737/, Py; Multistep reaction; |
4β-Chlor-5β-azido-androstanol-17β-on-3-acetat
clostebol acetate
Conditions | Yield |
---|---|
With silica gel In benzene |
clostebol acetate
Conditions | Yield |
---|---|
With silica gel In benzene |
Conditions | Yield |
---|---|
With acetic acid; zinc In methanol |
clostebol acetate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: (i) POCl3, DMF, trichloroethene, (ii) NaOAc 2: (i) H2SO4, MeOH, (ii) /BRN= 385737/, Py View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: SO2Cl2, Py 2: Zn, AcOH / methanol View Scheme |
clostebol acetate
acetic anhydride
3,17β-diacetoxy-4-chloro-androsta-3,5-diene
Conditions | Yield |
---|---|
With pyridine hydrochloride |
clostebol acetate
propionic acid anhydride
17β-acetoxy-4-chloro-3-propionyloxy-androsta-3,5-diene
Conditions | Yield |
---|---|
With pyridine hydrochloride |
clostebol acetate
A
C42H60Cl2O6
B
17β-acetoxy-4-chloro-androst-3-ene
Conditions | Yield |
---|---|
With acetic acid; zinc for 5.5h; Ambient temperature; | A 233 mg B 3.1 g |
clostebol acetate
17β-acetoxy-4-chloro-androst-3-ene
Conditions | Yield |
---|---|
With acetic acid; zinc In water at 15℃; for 0.25h; ultrasonic irradiation; Yield given; |
clostebol acetate
A
17β-acetoxy-4-chloroandrosta-4,6-diene-3-one
B
17β-acetoxy-4-chloroandrosta-1,4-diene-3-one
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid; 2,3-dicyano-5,6-dichloro-p-benzoquinone In benzene for 24h; Heating; | A 350 mg B 500 mg |
clostebol acetate
A
17β-acetoxy-3α-hydroxy-4-chloroandrost-4-ene
B
17β-acetoxy-3β-hydroxy-4-chloroandrost-4-ene
Conditions | Yield |
---|---|
With lithium tri-t-butoxyaluminum hydride In tetrahydrofuran for 3h; | A 250 mg B 6.7 g |
clostebol acetate
A
17β-acetoxy-4β-chloro-4,5-epoxy-5α-androstan-3-one
B
17β-acetoxy-4α-chloro-4,5-epoxy-5β-androstan-3-one
Conditions | Yield |
---|---|
With sodium hydroxide; dihydrogen peroxide In methanol at 5℃; for 18h; | A n/a B 230 mg |
clostebol acetate
Conditions | Yield |
---|---|
With N,N-dimethyl-formamide; trichlorophosphate |
clostebol acetate
6-dehydrotestosterone
Conditions | Yield |
---|---|
With sulfuric acid; dimethyl sulfoxide | |
Multi-step reaction with 2 steps 1: LiCl / dimethylformamide 2: aq. K2CO3 / methanol View Scheme |
clostebol acetate
17β-acetoxy-5α-androstan-3,6-dione
Conditions | Yield |
---|---|
With sulfuric acid; dimethyl sulfoxide |
Conditions | Yield |
---|---|
With sulfuric acid; dimethyl sulfoxide | |
With lithium chloride In N,N-dimethyl-formamide |
clostebol acetate
17beta-Acetoxyandrost-4-ene-3,6-dione
Conditions | Yield |
---|---|
With dimethyl sulfoxide at 150℃; |
clostebol acetate
17β-acetoxy-4-chloroandrosta-1,4-diene-3-one
Conditions | Yield |
---|---|
With acetic anhydride; selenious acid In tert-Amyl alcohol |
clostebol acetate
Conditions | Yield |
---|---|
(i) (CO2Et)2, NaH, benzene, (ii) NBS, Py; Multistep reaction; |
Conditions | Yield |
---|---|
(i) (CO2Et)2, NaH, benzene, (ii) N-chloro-succinimide, Py, (iii) /BRN= 385737/, Py; Multistep reaction; |
Conditions | Yield |
---|---|
With potassium tert-butylate In tert-butyl alcohol |
clostebol acetate
17β-acetoxy-3β-hydroxy-4-chloroandrost-4-ene
Conditions | Yield |
---|---|
With chromium chloride; sodium tetrahydroborate In methanol at 0℃; for 0.333333h; | 910 mg |
clostebol acetate
(aminooxy)acetic acid hemihydrochloride
Conditions | Yield |
---|---|
With pyridine In ethanol at 20℃; |
Conditions | Yield |
---|---|
With hydrogenchloride In acetone at 75℃; for 15h; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1 N aq. HCl / acetone / 15 h / 75 °C 2: pyridine / 120 h / 20 °C View Scheme |
clostebol acetate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: pyridine / ethanol / 20 °C 2: 2 N aq. HCl / 3 h / 80 °C 3: aq. CrO3; H2SO4 / acetone / 0.08 h / 0 °C View Scheme |
clostebol acetate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: pyridine / ethanol / 20 °C 2: 2 N aq. HCl / 3 h / 80 °C View Scheme |
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