131520-55-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131520-55-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,5,2 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 131520-55:
(8*1)+(7*3)+(6*1)+(5*5)+(4*2)+(3*0)+(2*5)+(1*5)=83
83 % 10 = 3
So 131520-55-3 is a valid CAS Registry Number.