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549504-68-9

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549504-68-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 549504-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,9,5,0 and 4 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 549504-68:
(8*5)+(7*4)+(6*9)+(5*5)+(4*0)+(3*4)+(2*6)+(1*8)=179
179 % 10 = 9
So 549504-68-9 is a valid CAS Registry Number.

549504-68-9Downstream Products

549504-68-9Relevant academic research and scientific papers

Alkyne-enol ether cross-metathesis in the presence of CuSO4: Direct formation of 3-substituted crotonaldehydes in aqueous medium

Castagnolo, Daniele,Botta, Lorenzo,Botta, Maurizio

supporting information; experimental part, p. 3172 - 3174 (2009/08/07)

An efficient synthesis of 3-substituted crotonaldehydes via alkyne-enol ether cross-metathesis in the presence of CuSO4 and in aqueous medium was developed. Crotonaldehydes were obtained in good yields from terminal aryl-alkynes as well as from

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