853-27-0

Basic information

• Product Name: 3,20-dioxopregn-4-en-21-al
• Synonyms: Pregn-4-en-21-al, 3,20-dioxo-
• CAS NO: 853-27-0
• Molecular Formula: C₂₁H₂₈O₃
• Molecular Weight: 328.4452
• Mol File: 853-27-0.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 458.8°C at 760 mmHg
• Flash Point: 195.8°C
• Density: 1.14g/cm³
• Vapor Pressure: 1.33E-08mmHg at 25°C
• Refractive Index: 1.551
• CAS DataBase Reference: 3,20-dioxopregn-4-en-21-al(CAS DataBase Reference)
• NIST Chemistry Reference: 3,20-dioxopregn-4-en-21-al(853-27-0)
• EPA Substance Registry System: 3,20-dioxopregn-4-en-21-al(853-27-0)

Safety Data

• Hazardous Substances Data: 853-27-0(Hazardous Substances Data)

Upstream product

• 64-85-7 21-Hydroxyprogesterone 
• 50300-53-3 3β-hydroxy-20-oxo-pregnen-(5)-al-(21) 
• 53892-00-5 21-Diazoprogesterone 
• 108-94-1 cyclohexanone 
• 555-31-7 aluminum isopropoxide 
• 108-88-3 toluene 
• 102084-43-5 3,3;21,21-bis-ethanediyldioxy-pregn-5-en-20-one 
• 67-64-1 acetone 
• 71-43-2 benzene 
• 1164-98-3 21-hydroxypregnenolone 
• 152-58-9 Cortexolone 
• 60-00-4 ethylenediaminetetraacetic acid 

Downstream Products

• 302-97-6 androst-4-en-3-one-17β-carboxylic acid 
• 2681-57-4 3,20-dioxopregn-4-en-21-oic acid 
• 56-47-3 deoxycorticosterone acetate 

Relevant articles and documents

Stereochemistry of hydrogen loss during C-21 dehydroxylation of tetrahydrodeoxycorticosterone by Eubacterium lentum

The loss of hydrogen from the C-21 position of 5β-pregnane-3α,21-diol-20-one (tetrahydrodeoxycorticosterone, THDOC) during reductive removal of the 21-hydroxy group by the anaerobic bacterium Eubacterium lentum has been shown to be selective for the pro-S position by the use of THDOC labelled with deuterium at the C-21 pro-S and C-21 pro-R positions.The labelled substrates were obtained by using the bacterium Clostridium paraputrificum to reduce chemically prepared C-21 labelled samples of pregn-4-en-21-ol-3,20-dione (deoxycorticosterone, DOC) at C-3 and C-4 (5).The stereochemistry of deuterium label introduced by chemical means at C-21 of DOC was determined by comparison with a sample of 21-(R)-DOC-21-d1 produced by reduction of the corresponding aldehyde pregn-4-en-21-al-3,20-dione, 21-d by the enzyme 21-hydroxysteroid NAD oxidoreductase from beef liver. Key words: Eubacterium, Clostridium, steroids, tetrahydrodeoxycorticosteroids.

Novel pregnanoic acid derivatives

Steroids of the formula SPC1 Wherein X is a hydrogen atom, a halogen atom or methyl; Y is a hydrogen atom or a halogen atom; Z is carbonyl, β-acyloxymethylene or, when Y is a hydrogen atom, also methylene; R1 is a hydrogen atom or methyl; R2 is a hydrogen atom, an alkali metal atom or optionally substituted hydrocarbon; and --A--B-- is --CH=CH--, --CCl=CH-- or when at least one of X, Y and R1 is other than a hydrogen atom, --CH2 --CH2 --, which can be produced by oxidizing a corresponding 20-hydroxy steroid or a corresponding 21-aldehyde, possess topical anti-inflammatory activity.