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5-Decen-2-one, (E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

42521-57-3

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42521-57-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42521-57-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,2 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42521-57:
(7*4)+(6*2)+(5*5)+(4*2)+(3*1)+(2*5)+(1*7)=93
93 % 10 = 3
So 42521-57-3 is a valid CAS Registry Number.

42521-57-3Downstream Products

42521-57-3Relevant academic research and scientific papers

Unsymmetrical unsaturated ketones from lactones and carboxylic acids in one step

Giersch, Wolfgang,Naef, Ferdinand

, p. 1704 - 1710 (2004)

A one-step transformation of γ- and δ-(spiro)lactones into γ,δ- and δ,ε-unsaturated ketones in the presence of carboxylic acids in the vapor phase at 400° over a supported manganese catalyst is reported for the first time. The scope of this new transformation is exemplified with a series of lactones, and a mechanistic rationale is proposed.

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