188644-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188644-31-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,6,4 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 188644-31:
(8*1)+(7*8)+(6*8)+(5*6)+(4*4)+(3*4)+(2*3)+(1*1)=177
177 % 10 = 7
So 188644-31-7 is a valid CAS Registry Number.
188644-31-7Relevant academic research and scientific papers
Gray, Nathanael S.,Kwon, Soojin,Schultz, Peter G.
, p. 1161 - 1164 (1997)
A method for the combinatorial synthesis of 2,9-substituted purines using a Mitsunobu reaction to alkylate the N-9 position and an amination reaction to install amines at the C-2 position has been developed.
