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67459-71-6

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67459-71-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67459-71-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,4,5 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 67459-71:
(7*6)+(6*7)+(5*4)+(4*5)+(3*9)+(2*7)+(1*1)=166
166 % 10 = 6
So 67459-71-6 is a valid CAS Registry Number.

67459-71-6Relevant articles and documents

ON THE DIRECT METALATION OF ISOPRENE

Klusener, P. A. A.,Tip, L.,Brandsma, L.

, p. 2041 - 2064 (2007/10/02)

Isoprene has been metalated in tetrahydrofuran with an excess of sterically hindered potassium dialkylamides, prepared by combining equimolar amounts of the corresponding lithium amide and potassium tert-butoxide.Subsequent reaction with oxirane, alkyl bromides, and pivaldehyde gave the expected coupling products in reasonable yields.Coupling with (CH3)2CHCH2CH=O and (CH3)2C=CHCH=O afforded the bark beetle pheromones (+/-)-ipsenol and (+/-)-ipsdienol in low yields.

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