131831-29-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131831-29-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,8,3 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 131831-29:
(8*1)+(7*3)+(6*1)+(5*8)+(4*3)+(3*1)+(2*2)+(1*9)=103
103 % 10 = 3
So 131831-29-3 is a valid CAS Registry Number.