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[(E)-3-Methyl-2-oxo-3-pentenyl]phosphonic acid diethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

54543-01-0

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54543-01-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54543-01-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,5,4 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 54543-01:
(7*5)+(6*4)+(5*5)+(4*4)+(3*3)+(2*0)+(1*1)=110
110 % 10 = 0
So 54543-01-0 is a valid CAS Registry Number.

54543-01-0Downstream Products

54543-01-0Relevant academic research and scientific papers

An expeditious synthesis of (±)-desepoxy-4,5-didehydromethylenomycin A methyl ester

Balczewski, Piotr,Mikolajczyk, Marian

, p. 1153 - 1154 (2007/10/03)

A total synthesis of the racemic methyl ester of desepoxy-4,5-didehydromethylenomycin A has been achieved in six steps with an overall yield of 31% starting from diethyl methanephosphonate. The key steps include the Nazarov cyclization of the dienone 7 leading to the α-phosphoryl cyclopentenone 8 and the Horner-Wittig reaction of the latter employed for the introduction of the exocyclic methylene moiety.

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