19831-39-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19831-39-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,3 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 19831-39:
(7*1)+(6*9)+(5*8)+(4*3)+(3*1)+(2*3)+(1*9)=131
131 % 10 = 1
So 19831-39-1 is a valid CAS Registry Number.