817631-14-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 817631-14-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,7,6,3 and 1 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 817631-14:
(8*8)+(7*1)+(6*7)+(5*6)+(4*3)+(3*1)+(2*1)+(1*4)=164
164 % 10 = 4
So 817631-14-4 is a valid CAS Registry Number.