131239-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131239-63-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,2,3 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131239-63:
(8*1)+(7*3)+(6*1)+(5*2)+(4*3)+(3*9)+(2*6)+(1*3)=99
99 % 10 = 9
So 131239-63-9 is a valid CAS Registry Number.