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Golden Pharma Co., Limited

GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

16-Dehydropregnenolone acetate

Cas:979-02-2

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Lonwin Chemical Group Limited

Why Choose Us 1. Quality Price We are the manufacturer, so we can provide the competitive price and high quality product. 2. Packing Products could be packaged according to customer's specializedrequirements. 3. Transport The products c

979-02-2 Hesperiden979-02-2 factorySupply Hesperiden

Cas:979-02-2

Min.Order:1000 Kilogram

Negotiable

Type:Other

inquiry

Shaanxi New nine Material Technology Co., Ltd.

Our 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 quali

Dehydroepiandrosterone16-Dehydropregnenolone acetate

Cas:979-02-2

Min.Order:1 Kilogram

FOB Price: $10.0

Type:Trading Company

inquiry

Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

16-Dehydropregnenolone acetate Manufacturer/High quality/Best price/In stock

Cas:979-02-2

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Simagchem Corporation

Welcome 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

High quality 16-Dehydro Pregnenolone Acetate (16-Dpa) supplier in China

Cas:979-02-2

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

inquiry

Wuhan Fortuna Chemical Co.,Ltd

Unique advantages Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:White crystalline powder Storage:cool dry place Package:1kg/foil bag;25kg/drum Application:pharmaceutical intermed

Manufacturer high quality 16-Dehydropregnenolone acetate Cas 979-02-2 with good price

Cas:979-02-2

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Henan Allgreen Chemical Co.,Ltd

high quality Appearance:White or off-white Solid Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea Port:shanghai

DEHYDROPREGNENOLONE ACETATE, 16-(RG)

Cas:979-02-2

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

inquiry

Ality Chemical Corporation

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

Factory Supply 20-oxopregna-5,16-dien-3-β-yl acetate

Cas:979-02-2

Min.Order:1

Negotiable

Type:Other

inquiry

Xi`an Eastling Biotech Co., Ltd.

Product Name:16-Dehydropregnenolone Appearance:White Powder Assay: 99% Shipping method: Fedex, DHL, TNT, Sea, Air or as you wish Type: natural Package: Aluminum Foil Bag Hot Market: Europe, America, Asia Usage: Food,Cosmetics,Dietary Supplemen

Eastling Supply 16-Dehydropregnenolone acetate Powder

Cas:979-02-2

Min.Order:1 Kilogram

FOB Price: $2.0 / 5.0

Type:Lab/Research institutions

inquiry

Chemwill Asia Co., Ltd.

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

16-Dehydropregnenolone acetate

Cas:979-02-2

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Hubei DiBo chemical co., LTD

Name:16-dehydropregnenolone acetate CAS NO: 979-02-2 Grade:Medical scientific research and export Molecular formula: C23H32O3 Molecular weight:356.4984 Product Quality 12 years of chemical raw materials Mature operation of the industry S

16-dehydropregnenolone acetate/ CAS:979-02-2/ raw material/ high-quality

Cas:979-02-2

Min.Order:25 Kilogram

FOB Price: $2.0 / 3.0

Type:Other

inquiry

LIDE PHARMACEUTICALS LIMITED

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 R&amp

16-Denyprasterone acetate

Cas:979-02-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

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 on.O

TIANFU CHEM---16-Dehydropregnenolone acetate

Cas:979-02-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Superiority As a reliable partner for Chinese market, we are specialized in chemical raw materials; consolidate sourcing, marketing, sales, distribution and after-sale services, providing our partners with sourcing evaluation, technology supports, to

16-dehydropregnenolone acetate 979-02-2

Cas:979-02-2

Min.Order:1 Gram

FOB Price: $5.0 / 15.0

Type:Trading Company

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, 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

16-Dehydropregnenolone acetate

Cas:979-02-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

WITH 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

New production CAS 979-02-2 with best quality

Cas:979-02-2

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Wuhan Han Sheng New Material Technology Co.,Ltd

Our 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

factory supply 16-Dehydropregnenolone acetate free sample

Cas:979-02-2

Min.Order:10 Gram

Negotiable

Type:Trading Company

inquiry

Hebei Sankai Chemical Technology Co., Ltd

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 powd

16-Dehydropregnenolone acetate

Cas:979-02-2

Min.Order:1 Kilogram

FOB Price: $80.0 / 87.0

Type:Trading Company

inquiry

Henan Sinotech Import&Export Corporation

Product Name: 16-Dehydropregnenolone acetate Synonyms: 20-oxopregna-5,16-dien-3-beta-yl acetate;16-DPA(16-DENYDRO PREGNENOIONE ACETATE);5,16-Pregnadiene-3-beta-ol-20-;5,16-Pregnadiene-3β-ol-20-one acet

16-Dehydropregnenolone acetate

Cas:979-02-2

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Hubei Langyou International Trading Co., Ltd

Advantages: Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best serv

16-Dehydropregnenolone acetate For Hormones Steroids

Cas:979-02-2

Min.Order:10 Gram

Negotiable

Type:Other

inquiry

Hefei TNJ chemical industry co.,ltd

1. We are one of the domestic largest manufacturers of API; 2. We are always the supplier of products with higher quality and at more competitive price; 3. We are supplier of safe and ecofriendly products ; 4. We provide stable supply and

Manufacturer of 16-dehydropregnenolone acetate/16 DPA at Factory Price

Cas:979-02-2

Min.Order:25 Kilogram

Negotiable

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.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

16-Dehydropregnenolone acetate 979-02-2

Cas:979-02-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

16-Dehydropregnenolone acetate CAS: 979-02-2 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 org

16-Dehydropregnenolone acetate CAS: 979-02-2

Cas:979-02-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Wonda Pharm Limited

1.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

High puity Dehydropregnenolone

Cas:979-02-2

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Quanhe Biotechnology Co. LTD

1. 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

16-Dehydropregenolone Acetate

Cas:979-02-2

Min.Order:1 Kilogram

FOB Price: $80.0 / 100.0

Type:Lab/Research institutions

inquiry

Changchun Artel lmport and Export trade company

Product Detail Minimum Order Qty. 10 Gram

16-Dehydropregnenolone acetate CAS NO.979-02-2

Cas:979-02-2

Min.Order:10 Gram

Negotiable

Type:Trading Company

inquiry

Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

16-Dehydro pregnenolone Acetate

Cas:979-02-2

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

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

16-dehydropregnenolone acetate

Cas:979-02-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Afine Chemicals Limited

Our 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

16-DEHYDROPREGNENOLONE ACETATE

Cas:979-02-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

SHANGHAI T&W PHARMACEUTICAL CO., LTD.

A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc

16-Dehydropregnenolone acetate

Cas:979-02-2

Min.Order:4 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

3β-acetoxy-20-hydroxyiminopregna-5,16-diene
23549-24-8, 23549-26-0, 2174-13-2

3β-acetoxy-20-hydroxyiminopregna-5,16-diene

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With Dess-Martin periodane In dichloromethane; water for 0.333333h;95%
(3β)-21-bromo-20-oxopregna-5,16-dien-3-yl acetate
86284-34-6

(3β)-21-bromo-20-oxopregna-5,16-dien-3-yl acetate

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With aluminum oxide; zirconium(IV) chloride; benzaldehyde microwave irradiation;88%
3β-acetoxyandrosta-5,16-dien-17-yl trifluoromethanesulphonate
115375-60-5

3β-acetoxyandrosta-5,16-dien-17-yl trifluoromethanesulphonate

ethyl vinyl ether
109-92-2

ethyl vinyl ether

A

(Z/E)-3β-Acetoxypregna-5,17(20)-dien-21-al
16934-48-8

(Z/E)-3β-Acetoxypregna-5,17(20)-dien-21-al

B

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0); triethylamine In dimethyl sulfoxide at 60℃; for 4h;A 8%
B 82%
Tributyl-[(3S,8R,9S,10R,13S,14S)-10,13-dimethyl-3-(tetrahydro-pyran-2-yloxy)-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-stannane
136321-38-5

Tributyl-[(3S,8R,9S,10R,13S,14S)-10,13-dimethyl-3-(tetrahydro-pyran-2-yloxy)-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-stannane

acetyl chloride
75-36-5

acetyl chloride

A

3β-acetoxyandrost-5,16-diene
1236-14-2

3β-acetoxyandrost-5,16-diene

B

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With N,N,N,N,N,N-hexamethylphosphoric triamide; bis(benzonitrile)palladium(II) dichloride at 80℃; for 8h;A 80%
B 30%
3β,17α-diacetoxypregn-5-en-20-one
3517-38-2

3β,17α-diacetoxypregn-5-en-20-one

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
80%
acetic acid
64-19-7

acetic acid

solasodine
126-17-0

solasodine

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
Stage #1: solasodine With pyridine; ammonium chloride at 125 - 135℃; for 8 - 9h;
Stage #2: acetic acid With chromium(VI) oxide In water; 1,2-dichloro-ethane at 0 - 20℃; for 1h; Product distribution / selectivity;
65%
pseudodiosgenin diacetate
2309-38-8

pseudodiosgenin diacetate

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With chromium(VI) oxide; acetic acid41%
Stage #1: pseudodiosgenin diacetate With potassium permanganate; sodium perchlorate In dichloromethane; water for 0.05h;
Stage #2: N-benzyl-N,N,N-triethylammonium chloride In dichloromethane; water at 20℃; for 6h;
Stage #3: With acetic acid for 3h; Product distribution / selectivity; Heating / reflux;
32%
Stage #1: pseudodiosgenin diacetate With potassium permanganate; sodium iodate In dichloromethane; water for 0.05h;
Stage #2: N-benzyl-N,N,N-triethylammonium chloride In dichloromethane; water at 20℃; for 10h;
Stage #3: With acetic acid for 3h; Product distribution / selectivity; Heating / reflux;
32%
3',4',6'-tri-O-acetyl-1',2',O-(16-dehydropregnenolone-3-yloxyethylidene)-α-D-glucopyranose
58026-06-5

3',4',6'-tri-O-acetyl-1',2',O-(16-dehydropregnenolone-3-yloxyethylidene)-α-D-glucopyranose

A

16-dehydropregnenolone
1162-53-4

16-dehydropregnenolone

B

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

C

di-16-dehydropregnenolone-2-yl ether
93238-36-9

di-16-dehydropregnenolone-2-yl ether

D

3-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-16-dehydropregnanolone
13407-28-8

3-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-16-dehydropregnanolone

E

3-O-(2',3',4',6'-tetra-O-acetyl-α-D-glucopyranosyl)-16-dehydropregnenolone
93269-28-4

3-O-(2',3',4',6'-tetra-O-acetyl-α-D-glucopyranosyl)-16-dehydropregnenolone

Conditions
ConditionsYield
With mercury dibromide In nitromethane at 90℃; for 1h; Product distribution; other molar ratio, other time;A 2%
B 8%
C 14%
D 36.3%
E 4%
3',4',6'-tri-O-acetyl-1',2',O-(16-dehydropregnenolone-3-yloxyethylidene)-α-D-glucopyranose
58026-06-5

3',4',6'-tri-O-acetyl-1',2',O-(16-dehydropregnenolone-3-yloxyethylidene)-α-D-glucopyranose

A

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

B

di-16-dehydropregnenolone-2-yl ether
93238-36-9

di-16-dehydropregnenolone-2-yl ether

C

3-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-16-dehydropregnanolone
13407-28-8

3-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-16-dehydropregnanolone

D

3-O-(2',3',4',6'-tetra-O-acetyl-α-D-glucopyranosyl)-16-dehydropregnenolone
93269-28-4

3-O-(2',3',4',6'-tetra-O-acetyl-α-D-glucopyranosyl)-16-dehydropregnenolone

Conditions
ConditionsYield
With mercury dibromide In nitromethane at 90℃; for 1h; Further byproducts given;A 8%
B 14%
C 36.3%
D 4%
(25R)-22,26-epiminocholesta-5,22(N)-diene-3β,16β-diol diacetate
30040-85-8

(25R)-22,26-epiminocholesta-5,22(N)-diene-3β,16β-diol diacetate

A

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

B

(20S)-3β,16β-diacetoxy-20-(5-methyl-2-pyridyl)pregn-5-ene

(20S)-3β,16β-diacetoxy-20-(5-methyl-2-pyridyl)pregn-5-ene

C

(25R)-3β,16β-diacetoxy-22,26-epiminocholest-5,22(N)-dien-23-one

(25R)-3β,16β-diacetoxy-22,26-epiminocholest-5,22(N)-dien-23-one

Conditions
ConditionsYield
With manganese(IV) oxide In chloroform for 48h; Ambient temperature;A 5%
B 6%
C 16%
3β-acetoxy-17-bromo-pregn-5-en-20-one
7391-03-9

3β-acetoxy-17-bromo-pregn-5-en-20-one

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With 2,4,6-trimethyl-pyridine
Pregna-5,16-diene-20-yne-3β-ol 3-Acetate
52310-78-8

Pregna-5,16-diene-20-yne-3β-ol 3-Acetate

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With boron trifluoride diethyl etherate; acetic anhydride; mercury(II) oxide Reagens 4: Essigsaeure;und anschliessend mit Wasser;
With water; aniline; mercury(II) chloride Reagens 4: Benzol;
3β-acetoxy-17-benzoyloxy-17βH-pregnen-(5)-one-(20)

3β-acetoxy-17-benzoyloxy-17βH-pregnen-(5)-one-(20)

A

pregna-3,5,16-trien-20-one
6795-58-0

pregna-3,5,16-trien-20-one

B

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
at 220℃; und anschliessend unter 10 Torr auf 300grad;
16-dehydropregnenolone
1162-53-4

16-dehydropregnenolone

acetic anhydride
108-24-7

acetic anhydride

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With pyridine
acetic acid
64-19-7

acetic acid

(22R,25R)-28-acetyl-spirosol-5-en-3β-ol
58822-29-0

(22R,25R)-28-acetyl-spirosol-5-en-3β-ol

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
anschliessendes Behandeln mit CrO3 in wss. Essigsaeure und Erhitzen der danach erhaltenen Reaktionsloesung auf Siedetemperatur;
acetic acid
64-19-7

acetic acid

solasodine N,O-diacetate
4860-15-5

solasodine N,O-diacetate

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
anschliessendes Behandeln mit CrO3 in wss. Essigsaeure und Erhitzen der danach erhaltenen Reaktionsloesung auf Siedetemperatur;
acetic anhydride
108-24-7

acetic anhydride

solasodine
126-17-0

solasodine

A

3β-acetoxy-16α-methoxy-pregn-5-en-20-one
55320-51-9

3β-acetoxy-16α-methoxy-pregn-5-en-20-one

B

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
Behandeln mit CrO3 in wss. Essigsaeure, Erwaermen mit methanol. KOH und Behandeln mit Acetanhydrid und Pyridin;
Acetic acid (3S,8R,9S,10R,13S,14S,16R,17S)-17-acetyl-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-20-oxa-cyclopropa[16,17]cyclopenta[a]phenanthren-3-yl ester
34209-81-9

Acetic acid (3S,8R,9S,10R,13S,14S,16R,17S)-17-acetyl-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-20-oxa-cyclopropa[16,17]cyclopenta[a]phenanthren-3-yl ester

A

3β-acetoxy-16α-hydroxy-pregn-5-en-20-one
4059-78-3

3β-acetoxy-16α-hydroxy-pregn-5-en-20-one

B

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With chromium dichloride
acetic anhydride
108-24-7

acetic anhydride

Acetic acid (3S,8R,9S,10R,13S,14S)-17-(1-acetylamino-vinyl)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl ester

Acetic acid (3S,8R,9S,10R,13S,14S)-17-(1-acetylamino-vinyl)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl ester

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With dmap In dichloromethane Heating; Yield given;
16-dehydro-pregnenolone acetate ethylene ketal
39932-37-1

16-dehydro-pregnenolone acetate ethylene ketal

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
With aluminium(III) iodide In acetonitrile; benzene for 0.25h; Ambient temperature;85 % Chromat.
diosgenin
512-04-9

diosgenin

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Conditions
ConditionsYield
Yield given. Multistep reaction;
Multi-step reaction with 3 steps
1: 1 h / 195 °C
2: CrO3; AcOH / 3 h / 10 - 15 °C
3: 2.3 g / sodium bisulphite; AcOH / H2O / 1 h / Heating
View Scheme
Multi-step reaction with 2 steps
1: boron trifluoride diethyl etherate / dichloromethane
2: acetic acid; chromium(VI) oxide / dichloromethane
View Scheme
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Pregnenolone acetate
1778-02-5

Pregnenolone acetate

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In ethyl acetate at 30℃; under 2327.2 Torr; for 16h;98%
With ammonium formate; palladium on activated charcoal In methanol for 0.6h; Heating;98%
With hydrogen; palladium on activated charcoal In ethyl acetate at 30℃; under 2327.23 Torr; for 12h;98%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-hydroxypregn-5-en-20-one-3-acetate
1093959-59-1

3β-hydroxypregn-5-en-20-one-3-acetate

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen In ethyl acetate at 30℃; for 6h;98.18%
With magnesium; zinc(II) chloride for 0.583333h;90%
With hydrogen; Cu/Al2O3 under 760 Torr;87%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-acetoxy-5α,6α-epoxypregn-16-ene-20-one
14279-42-6

3β-acetoxy-5α,6α-epoxypregn-16-ene-20-one

Conditions
ConditionsYield
With 3-chloro-benzenecarboperoxoic acid In dichloromethane at 20℃; for 1h;98%
With 3-chloro-benzenecarboperoxoic acid In chloroform at 20℃; for 0.5h;97%
With 3-chloro-benzenecarboperoxoic acid In chloroform at 20℃; for 0.5h;97%
With silica gel; 3-chloro-benzenecarboperoxoic acid at 20℃; for 1.5h;91.75%
With 3-chloro-benzenecarboperoxoic acid In chloroform at 0 - 20℃;
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

pregnenolone acetate
906-83-2

pregnenolone acetate

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In ethanol at 30℃; under 2844.39 Torr; for 12h;98%
With 5% Pd(II)/C(eggshell); hydrogen In ethanol under 2327.23 Torr; for 10h;95%
With 5%-palladium/activated carbon; hydrogen In ethanol under 2327.23 Torr; for 12h;95%
Multi-step reaction with 2 steps
1: hydrogen; 5%-palladium/activated carbon / ethyl acetate / 20 °C / 750.08 Torr
2: hydrogen; palladium 10% on activated carbon / ethyl acetate / 20 °C / 750.08 Torr
View Scheme
N-hydroxy-4-methylbenzenecarboximidoyl chloride
36288-37-6

N-hydroxy-4-methylbenzenecarboximidoyl chloride

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-acetoxy-3'-4"-tolyl-2'-isoxazolino[4',5'-d:16α,17α]pregn-5-en-20-one

3β-acetoxy-3'-4"-tolyl-2'-isoxazolino[4',5'-d:16α,17α]pregn-5-en-20-one

Conditions
ConditionsYield
Stage #1: N-hydroxy-4-methylbenzenecarboximidoyl chloride; 16-dehydropregnenolone acetate With N-ethyl-N,N-diisopropylamine In toluene at 20℃; for 0.0833333h;
Stage #2: In toluene at 111℃; for 2h; regioselective reaction;
98%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-hydroxy-16α,17α-epoxypregn-5-en-20-one
974-23-2

3β-hydroxy-16α,17α-epoxypregn-5-en-20-one

Conditions
ConditionsYield
With sodium hydroxide; urea hydrogen peroxide adduct In methanol; water at 5℃; for 72h;97%
With sodium hydroxide; urea hydrogen peroxide adduct In methanol; water at 5 - 500℃; for 72h;97%
With sodium hydroxide; dihydrogen peroxide In methanol; water at 5 - 15℃; for 23h;95%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

16-dehydropregnenolone
1162-53-4

16-dehydropregnenolone

Conditions
ConditionsYield
With water; sodium hydroxide In methanol at 20℃; for 12h; Reagent/catalyst; Solvent;97%
With potassium hydroxide; tert-butyl alcohol In water at 30℃; for 10h;96%
With potassium hydroxide In tert-butyl alcohol at 30℃; for 10h;96%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-acetoxy-20-hydroxyiminopregna-5,16-diene
23549-24-8, 23549-26-0, 2174-13-2

3β-acetoxy-20-hydroxyiminopregna-5,16-diene

Conditions
ConditionsYield
With pyridine; hydroxylamine hydrochloride In ethanol for 0.5h; Reflux;97%
With pyridine; hydroxylamine hydrochloride In ethanol for 0.5h; Reflux;97%
With pyridine; hydroxylamine hydrochloride for 96h; Cooling;96%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

N-hydroxy-4-methoxy-benzenecarboximidoyl chloride
38435-51-7

N-hydroxy-4-methoxy-benzenecarboximidoyl chloride

3β-acetoxy-3'-4"-methoxyphenyl-2'-isoxazolino[4',5'-d:16α,17α]pregn-5-en-20-one

3β-acetoxy-3'-4"-methoxyphenyl-2'-isoxazolino[4',5'-d:16α,17α]pregn-5-en-20-one

Conditions
ConditionsYield
Stage #1: 16-dehydropregnenolone acetate; N-hydroxy-4-methoxy-benzenecarboximidoyl chloride With N-ethyl-N,N-diisopropylamine In toluene at 20℃; for 0.0833333h;
Stage #2: In toluene at 111℃; for 2h; regioselective reaction;
97%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

(3β)-21-bromo-20-oxopregna-5,16-dien-3-yl acetate
86284-34-6

(3β)-21-bromo-20-oxopregna-5,16-dien-3-yl acetate

Conditions
ConditionsYield
With t-butyldimethylsiyl triflate; bromine; triethylamine In dichloromethane95%
With copper(ll) bromide In i-Amyl alcohol at 46 - 48℃;95%
With copper(ll) bromide In tetrahydrofuran
t-butyldimethylsiyl triflate
69739-34-0

t-butyldimethylsiyl triflate

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-Acetoxy-20-(tert-butyldimethylsilyl)oxypregna-5,16,20-triene

3β-Acetoxy-20-(tert-butyldimethylsilyl)oxypregna-5,16,20-triene

Conditions
ConditionsYield
With triethylamine In diethyl ether at 0 - 20℃; for 0.75h;95%
With triethylamine In dichloromethane at 5℃;82%
acetyl hydrazine hydrochloride
36147-94-1

acetyl hydrazine hydrochloride

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

1'-acetyl-3'-methyl-3β-acetoxyandrost-5-eno[17,16-d]pyrazole

1'-acetyl-3'-methyl-3β-acetoxyandrost-5-eno[17,16-d]pyrazole

Conditions
ConditionsYield
With iodine In ethanol for 1h; Cycloaddition; Heating;95%
methylmagnesium bromide
75-16-1

methylmagnesium bromide

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

16α-methylpregn-5-en-3β-ol-20-one 3-acetate
1863-41-8

16α-methylpregn-5-en-3β-ol-20-one 3-acetate

Conditions
ConditionsYield
Stage #1: methylmagnesium bromide; 16-dehydropregnenolone acetate With copper(l) chloride In tetrahydrofuran at -10 - 0℃; for 0.333333h; Grignard reaction; Inert atmosphere;
Stage #2: With methanol In tetrahydrofuran at -5℃; for 0.25h;
Stage #3: With water In tetrahydrofuran; methanol at 5 - 10℃; for 2h;
95%
4-fluorophenyl benzaldehyde-tosylhydrazone sodium salt
107633-40-9

4-fluorophenyl benzaldehyde-tosylhydrazone sodium salt

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-acetoxy-4',5'-dihydro-5'β-(4-fluorophenyl)pregn-5-eno[17α,16α-c]pyrazol-20-one

3β-acetoxy-4',5'-dihydro-5'β-(4-fluorophenyl)pregn-5-eno[17α,16α-c]pyrazol-20-one

Conditions
ConditionsYield
In methanol; dichloromethane at 175℃; under 0.05 Torr;95%
sodium 2-benzylidene-1-tosylhydrazin-1-ide
27992-27-4, 40154-38-9

sodium 2-benzylidene-1-tosylhydrazin-1-ide

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-acetoxy-4',5'-dihydro-5'β-phenylpregn-5-eno[17α,16α-c]pyrazol-20-one

3β-acetoxy-4',5'-dihydro-5'β-phenylpregn-5-eno[17α,16α-c]pyrazol-20-one

Conditions
ConditionsYield
In methanol; dichloromethane at 175℃; under 0.05 Torr;95%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

benzohydroximoyl chloride
698-16-8

benzohydroximoyl chloride

3β-acetoxy-3'-phenyl-2'-isoxazolino[4',5'-d:16α,17α]pregn-5-en-20-one
1062-66-4

3β-acetoxy-3'-phenyl-2'-isoxazolino[4',5'-d:16α,17α]pregn-5-en-20-one

Conditions
ConditionsYield
Stage #1: 16-dehydropregnenolone acetate; benzohydroximoyl chloride With N-ethyl-N,N-diisopropylamine In toluene at 20℃; for 0.0833333h;
Stage #2: In toluene at 111℃; for 2h; regioselective reaction;
95%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-hydroxy-16β-chloropregn-5-en-20-one

3β-hydroxy-16β-chloropregn-5-en-20-one

Conditions
ConditionsYield
With hydrogenchloride In methanol94%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

C23H32O5

C23H32O5

Conditions
ConditionsYield
With 3-chloro-benzenecarboperoxoic acid In chloroform for 3h; Reflux;93.54%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

Pregnenolone
145-13-1

Pregnenolone

Conditions
ConditionsYield
Stage #1: 16-dehydropregnenolone acetate With hydrogen at 0 - 25℃; for 1h;
Stage #2: With potassium hydroxide for 2h; Reflux;
92.8%
Multi-step reaction with 2 steps
1: 98 percent / H2 / Pd/C / ethyl acetate / 12 h / 30 °C / 2327.23 Torr
2: 97 percent / potassium hydroxide; H2O / methanol / 2 h / 30 °C
View Scheme
Multi-step reaction with 2 steps
1: 97 percent / H2 / Pd/C / 15 h / 30 °C / 2327.17 Torr
2: 96 percent / KOH / 2-methyl-propan-2-ol; H2O / 16 h / 30 °C
View Scheme
pyridine
110-86-1

pyridine

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

1-[2-((3S,8R,9S,10R,13S,14S)-3-Acetoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-oxo-ethyl]-pyridinium; iodide

1-[2-((3S,8R,9S,10R,13S,14S)-3-Acetoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-oxo-ethyl]-pyridinium; iodide

Conditions
ConditionsYield
With iodine for 2h; Heating;91.7%
trimethylsilyl cyanide
7677-24-9

trimethylsilyl cyanide

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

20-cyano-20-trimethylsilanyloxypregne-5,16-dien-3β-yl acetate

20-cyano-20-trimethylsilanyloxypregne-5,16-dien-3β-yl acetate

Conditions
ConditionsYield
With lithium ethoxide In tetrahydrofuran at 20℃;91%
Dimethyl oxalate
553-90-2

Dimethyl oxalate

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-hydroxy-21-methoxalylpregna-5,16-dien-20-one

3β-hydroxy-21-methoxalylpregna-5,16-dien-20-one

Conditions
ConditionsYield
With pyridine; sodium methylate; sodium chloride for 1h;91%
nitromethane
75-52-5

nitromethane

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-acetoxy-16α-nitromethyl-5-pregnan-20-one
117772-40-4

3β-acetoxy-16α-nitromethyl-5-pregnan-20-one

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 20℃; for 12h;90%
With piperidine
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 0℃; Michael condensation;
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

allyl-trimethyl-silane
762-72-1

allyl-trimethyl-silane

3β-acetoxy-16α-prop-2'-enylpregn-5-en-20-one
54022-29-6

3β-acetoxy-16α-prop-2'-enylpregn-5-en-20-one

Conditions
ConditionsYield
With titanium tetrachloride In dichloromethane for 5h; Ambient temperature;90%
phenylhydrazine hydrochloride
59-88-1

phenylhydrazine hydrochloride

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3-acetoxy-5'-methyl-2'-phenyl-2'H-androst-5-eno[16,17-c]pyrazole
32671-70-8

3-acetoxy-5'-methyl-2'-phenyl-2'H-androst-5-eno[16,17-c]pyrazole

Conditions
ConditionsYield
With iodine In ethanol for 1h; Cycloaddition; Heating;88%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

α-bromoacetophenone
70-11-1

α-bromoacetophenone

malononitrile
109-77-3

malononitrile

16-(1',1'-dicyano-3'-phenyl-3'-oxo-propano)-pregnenolone-3-acetate

16-(1',1'-dicyano-3'-phenyl-3'-oxo-propano)-pregnenolone-3-acetate

Conditions
ConditionsYield
With potassium hydroxide In methanol at 15 - 20℃; for 0.5h; Michael addition;88%
methylmagnesium bromide
75-16-1

methylmagnesium bromide

16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

17α-hydroperoxy-16α-methyl-20-oxopregn-5-en-3β-yl acetate
115040-05-6

17α-hydroperoxy-16α-methyl-20-oxopregn-5-en-3β-yl acetate

Conditions
ConditionsYield
With copper(l) chloride In tetrahydrofuran; benzene at 0 - 5℃; for 0.333333h; Grignard reaction; Inert atmosphere;88%
16-dehydropregnenolone acetate
979-02-2

16-dehydropregnenolone acetate

3β-acetoxy-5α,6β-dichloropregn-16-en-20-one
68315-64-0

3β-acetoxy-5α,6β-dichloropregn-16-en-20-one

Conditions
ConditionsYield
With chloro-trimethyl-silane; tetradecyltrimethylammonium permanganate In dichloromethane at 0 - 3℃; for 1.5h;87%
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