142502-68-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142502-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,5,0 and 2 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 142502-68:
(8*1)+(7*4)+(6*2)+(5*5)+(4*0)+(3*2)+(2*6)+(1*8)=99
99 % 10 = 9
So 142502-68-9 is a valid CAS Registry Number.
142502-68-9Relevant articles and documents
Synthesis of per(poly)fluoroalkyl aldehydes R(F)(CH2)(n)CHO
Leveque, Laurence,Le Blanc, Maurice Le,Pastor, Raphael
, p. 8857 - 8860 (1998)
We report the preparation of polyfluoroalkyl aldehydes R(F)(CH2)(n)CHO in high yields by direct oxidation of polyfluoroalkyl alcohols; the Swern oxidation, pyridinium chlorochromate and Dess-Martin periodinane are used and compared.