344259-58-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 344259-58-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,2,5 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 344259-58:
(8*3)+(7*4)+(6*4)+(5*2)+(4*5)+(3*9)+(2*5)+(1*8)=151
151 % 10 = 1
So 344259-58-1 is a valid CAS Registry Number.
344259-58-1Relevant articles and documents
A HORNER-WITTIG SOLUTION TO THE SYNTHESIS OF KETENE O,O-ACETALS
Schaik, T. A. M. van,Henzen, A. V.,Gen, A. van der
, p. 1303 - 1306 (2007/10/02)
Aldehydes as well as ketones can be converted into their homologous ketene O,O-acetals by a Horner-Wittig reaction with dialkoxymethyl diphenylphosphine oxides.