131880-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131880-21-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,8,8 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 131880-21:
(8*1)+(7*3)+(6*1)+(5*8)+(4*8)+(3*0)+(2*2)+(1*1)=112
112 % 10 = 2
So 131880-21-2 is a valid CAS Registry Number.