131988-03-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131988-03-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,8 and 8 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131988-03:
(8*1)+(7*3)+(6*1)+(5*9)+(4*8)+(3*8)+(2*0)+(1*3)=139
139 % 10 = 9
So 131988-03-9 is a valid CAS Registry Number.