1202657-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1202657-31-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,2,6,5 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1202657-31:
(9*1)+(8*2)+(7*0)+(6*2)+(5*6)+(4*5)+(3*7)+(2*3)+(1*1)=115
115 % 10 = 5
So 1202657-31-5 is a valid CAS Registry Number.