19876-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19876-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,7 and 6 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 19876-31:
(7*1)+(6*9)+(5*8)+(4*7)+(3*6)+(2*3)+(1*1)=154
154 % 10 = 4
So 19876-31-4 is a valid CAS Registry Number.