343791-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 343791-47-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,3,7,9 and 1 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 343791-47:
(8*3)+(7*4)+(6*3)+(5*7)+(4*9)+(3*1)+(2*4)+(1*7)=159
159 % 10 = 9
So 343791-47-9 is a valid CAS Registry Number.
343791-47-9Relevant articles and documents
1-diphenylphosphonio-1-methoxymethyllithium, a useful reagent for the synthesis of aldehydes from hindered ketones
Corey,Tius, Marcus A.
, p. 3535 - 3538 (1980)
A new reagent, 1-diphenylphosphonio-1-methoxymethyllithium, has been found to be highly effective for the transformation R2CO → R2CHCHO with sterically hindered, enolizable ketones.
