157768-41-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157768-41-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,6 and 8 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 157768-41:
(8*1)+(7*5)+(6*7)+(5*7)+(4*6)+(3*8)+(2*4)+(1*1)=177
177 % 10 = 7
So 157768-41-7 is a valid CAS Registry Number.
157768-41-7Relevant academic research and scientific papers
A General Reagent for O-Phosphonomethylation of Phenols
Cornforth, John,Wilson, John R. H.
, p. 1897 - 1900 (2007/10/02)
Diethyl 4-chlorophenylsulfonyloxymethylphosphonate, ClC6H4SO2OCH2P(O)(OEt)2, has been established as the reagent of choice for conversion of phenols via alkali phenoxides into phenoxymethylphosphonates.With other leaving groups (iodide, methanesulfonate,t
