131516-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131516-71-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,5,1 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 131516-71:
(8*1)+(7*3)+(6*1)+(5*5)+(4*1)+(3*6)+(2*7)+(1*1)=97
97 % 10 = 7
So 131516-71-7 is a valid CAS Registry Number.