20-alfa-Dhydrodydrogesterone

Modify Date: 2026-07-06 19:12:50

20-alfa-Dhydrodydrogesterone Structure
20-alfa-Dhydrodydrogesterone structure
Common Name 20-alfa-Dhydrodydrogesterone
CAS Number 652-69-7 Molecular Weight 332.477
Density 1.2±0.1 g/cm3 Boiling Point 487.1±45.0 °C at 760 mmHg
Molecular Formula C21H32O3 Melting Point 204-206ºC
MSDS N/A Flash Point 262.5±25.2 °C

Summary: Chinese name: 4-孕烯-17α,20α-二醇-3-酮; English name: (20S)-17,20-dihydroxypregn-4-en-3-one; CAS number: 652-69-7; Molecular formula: C21H32O3; Molecular weight: 332.477. The melting point is 204-206°C, boiling point is 487.1±45.0 °C, and density is 1.2±0.1 g/cm3. For research-use only, not for medical or clinical usage.


 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name (20S)-17,20-dihydroxypregn-4-en-3-one
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.2±0.1 g/cm3
Boiling Point 487.1±45.0 °C at 760 mmHg
Melting Point 204-206ºC
Molecular Formula C21H32O3
Molecular Weight 332.477
Flash Point 262.5±25.2 °C
Exact Mass 332.235138
PSA 57.53000
LogP 2.88
Vapour Pressure 0.0±2.8 mmHg at 25°C
Index of Refraction 1.568
InChIKey MASCESDECGBIBB-HNXXTFFGSA-N
SMILES CC(O)C1(O)CCC2C3CCC4=CC(=O)CCC4(C)C3CCC21C

 Precursor & DownStream

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor  0

DownStream  1

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

(20S)-17,20-Dihydroxypregn-4-en-3-one
20|A-Dihydroxyprogesterone
17|A-Hydroxy-20|A-dihydroprogesterone
(8R,9S,10R,13S,14S,17R)-17-hydroxy-17-[(1S)-1-hydroxyethyl]-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one
17alpha,20alpha-Dihydroxypregn-4-en-3-one
17|A,20|A-Dihydroxy-4-pregnen-3-one

 20-alfa-Dhydrodydrogesterone | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What are the downstream products of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: Related downstream products(CAS) of (20S)-17,20-dihydroxypregn-4-en-3-one: 68-96-2.
Q: What is the LogP of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: LogP of (20S)-17,20-dihydroxypregn-4-en-3-one is 2.88.
Q: What is the polar surface area (PSA) of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: Polar surface area (PSA) of (20S)-17,20-dihydroxypregn-4-en-3-one is 57.53000.
Q: What is the molecular weight of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: Molecular weight of (20S)-17,20-dihydroxypregn-4-en-3-one is 332.477.
Q: What is the boiling point of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: Boiling point of (20S)-17,20-dihydroxypregn-4-en-3-one is 487.1±45.0 °C at 760 mmHg.
Q: What is the melting point of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: Melting point of (20S)-17,20-dihydroxypregn-4-en-3-one is 204-206ºC.
Q: What is the molecular formula of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: Molecular formula of (20S)-17,20-dihydroxypregn-4-en-3-one is C21H32O3.
Q: What English synonyms does (20S)-17,20-dihydroxypregn-4-en-3-one have?
A: English synonyms of (20S)-17,20-dihydroxypregn-4-en-3-one: (20S)-17,20-Dihydroxypregn-4-en-3-one, 20|A-Dihydroxyprogesterone, 17|A-Hydroxy-20|A-dihydroprogesterone, (8R,9S,10R,13S,14S,17R)-17-hydroxy-17-[(1S)-1-hydroxyethyl]-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one, 17alpha,20alpha-Dihydroxypregn-4-en-3-one, 17|A,20|A-Dihydroxy-4-pregnen-3-one.
Q: What is the SMILES notation of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: SMILES notation of (20S)-17,20-dihydroxypregn-4-en-3-one is CC(O)C1(O)CCC2C3CCC4=CC(=O)CCC4(C)C3CCC21C.
Q: What is the InChIKey of (20S)-17,20-dihydroxypregn-4-en-3-one?
A: InChIKey of (20S)-17,20-dihydroxypregn-4-en-3-one is MASCESDECGBIBB-HNXXTFFGSA-N.

 20-alfa-Dhydrodydrogesteronefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.