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1,2-dibromo-2-methyl-7-phenoxyheptane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

257290-45-2

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257290-45-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 257290-45-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,2,9 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 257290-45:
(8*2)+(7*5)+(6*7)+(5*2)+(4*9)+(3*0)+(2*4)+(1*5)=152
152 % 10 = 2
So 257290-45-2 is a valid CAS Registry Number.

257290-45-2Downstream Products

257290-45-2Relevant academic research and scientific papers

Cyclization of 1,1-Disubstituted Alkenes to Cyclopentenes

Taber, Douglass F.,Christos, Thomas E.,Neubert, Timothy D.,Batra, Dolly

, p. 9673 - 9678 (2007/10/03)

A general method for the cyclization of an unactivated 1,1-disubstituted alkene such as 1 to the corresponding cyclopentene 5 is described. Bromination followed by the addition of strong base in the same pot gave the vinyl bromide 3, which reacted further in situ to give the alkylidene carbene 4. This then inserted 1,5 into a C-H bond to give the cyclopentene 5.

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