As 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 c
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LIDE PHARMACEUTICALS LIMITED is a professional chemicals and APIs leading manufacturer in China. Our core business line covers APIs, Intermediates, Herb extract, etc.
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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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Min.Order:1 Kilogram
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inquiryRefractive Index:1.595 Boiling Point:489.403 °C at 760 mmHg Flash Point:181.316 °C PSA:34.14000 Density:1.193 g/cm3 LogP:3.53750 XLogP3:1.6 Hydrogen Bond Donor Count:0 Hydrogen Bond Acceptor Count:2 Rotatable Bond Count:0 Ex
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Negotiable
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Min.Order:1 Metric Ton
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inquiryhigh purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
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Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryR & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates
J&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals
best seller Application:API
Triethyl orthoacetate
A
3-hydroxy-estra-1,3,5(10),9(11)-tetraen-17-one
B
Trendione
C
ethyl 3,17-dioxoandrosta-4(5),9(11)-diene-19-carboxylate
Conditions | Yield |
---|---|
In propionic acid at 137℃; for 4h; | A 2% B 2% C 81% |
trenbolone
Trendione
Conditions | Yield |
---|---|
With Dess-Martin periodane In dichloromethane at 20℃; for 0.5h; | 76% |
With oxalyl dichloride; dimethyl sulfoxide; triethylamine Swern oxidation; |
A
3-hydroxy-estra-1,3,5(10),9(11)-tetraen-17-one
B
Trendione
C
11β-mercapto estra-4,9-diene-3,17-dione
Conditions | Yield |
---|---|
With perchloric acid; hydrogen sulfide In dichloromethane at 0℃; for 0.25h; |
Conditions | Yield |
---|---|
With triethylamine; toluene-4-sulfonic acid In tetrahydrofuran; nitrogen; ethyl acetate | A n/a B 69% |
Conditions | Yield |
---|---|
Stage #1: Trendione With hydrogenchloride In ethylene glycol at 10 - 60℃; for 10h; Autoclave; Stage #2: allylmagnesium bromide In tetrahydrofuran; diethyl ether at 0℃; for 6h; Temperature; Solvent; Autoclave; | 65% |
Conditions | Yield |
---|---|
Stage #1: Trendione With hydrogenchloride In ethylene glycol at 25 - 60℃; for 10h; Autoclave; Stage #2: allylmagnesium bromide In tetrahydrofuran; diethyl ether at 0℃; for 5h; Autoclave; | 60% |
Trendione
C20H26O5
Conditions | Yield |
---|---|
With osmium(VIII) oxide; 4-methylmorpholine N-oxide In tetrahydrofuran; water; tert-butyl alcohol | 55% |
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid; orthoformic acid triethyl ester |
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