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20248-18-4 Usage


ChEBI: A steroid acid that is 23,24-bisnor-chol-1,4-dien-22-oic acid bearing an additional oxo substituent at position 3.

Check Digit Verification of cas no

The CAS Registry Mumber 20248-18-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,2,4 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20248-18:
74 % 10 = 4
So 20248-18-4 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017


1.1 GHS Product identifier

Product name 3-oxo-23,24-bisnorchola-1,4-dien-22-oic acid

1.2 Other means of identification

Product number -
Other names 20-Carboxy-1,4-pregnadien-3-one

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:20248-18-4 SDS

20248-18-4Relevant articles and documents

Microbial production of 3-oxobisnorchola-1,4-dien-22-oic acid


, p. 411 - 416,413, 414 (1978)


Isolation, biological significance, synthesis, and cytotoxic evaluation of new natural parathiosteroids A-C and analogues from the soft coral Paragorgia sp

Poza, Javier Jesus,Fernandez, Rogelio,Reyes, Fernando,Rodriguez, Jaime,Jimenez, Carlos

, p. 7978 - 7984 (2008/12/22)

(Chemical Equation Presented) Three unusual new steroid thioesters, parathiosteroids A-C (1a-3a), were isolated from the 2-propanol extract of the soft coral Paragorgia sp. collected in Madagascar. Their structures, determined by detailed spectroscopic analysis, were confirmed by synthesis and represent the first isolation of natural steroids bearing a C22 thioester in their side chain. These compounds displayed cytotoxicity against a panel of three human tumor cell lines at the micromolar level. The preparation of several analogues revealed structure/activity relationships in this type of steroids, for example, that the XCH2CH2NHCOCH3 moiety (X = S, O, NH) in the side chain is essential for the antiproliferative activity, and a low degree of oxidation in the A-ring results in higher bioactivity. These natural products could be biosynthetic intermediates in the steroid side chain degradation pathway involving activation with CoA and β-oxidations.


Schwarz, Vladimir,Pihera, Pavel,Protiva, Jiri,Mickova, Ruzena

, p. 2713 - 2720 (2007/10/02)

The biodegradation of cholesterol by the Mycobacterium mutant CCM 3528 gave rise to 22-hydroxy-23,24-bisnorchola-1,4-diene-3-one (I) as the main product.The identified by-products were 24-norchola-1,4-diene-3,22-dione (IX), androsta-1,4-diene-3,17-dione (XV) and their unsaturated analogues, X and XVI respectively.

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