1172507-31-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1172507-31-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,2,5,0 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1172507-31:
(9*1)+(8*1)+(7*7)+(6*2)+(5*5)+(4*0)+(3*7)+(2*3)+(1*1)=131
131 % 10 = 1
So 1172507-31-1 is a valid CAS Registry Number.