202977-11-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 202977-11-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,9,7 and 7 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 202977-11:
(8*2)+(7*0)+(6*2)+(5*9)+(4*7)+(3*7)+(2*1)+(1*1)=125
125 % 10 = 5
So 202977-11-5 is a valid CAS Registry Number.
202977-11-5Relevant articles and documents
A novel synthesis of unsymmetrical tertiary phosphines: Selective nucleophilic substitution on phosphorus(III)
Singh, Sumita,Nicholas, Kenneth M.
, p. 149 - 150 (2007/10/03)
A new synthesis of unsymmetrical tertiary phosphines has been developed employing selective, sequential alkylation of chloroaminophospnines by Grignard and organolithium reagents.
