817641-93-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 817641-93-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,7,6,4 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 817641-93:
(8*8)+(7*1)+(6*7)+(5*6)+(4*4)+(3*1)+(2*9)+(1*3)=183
183 % 10 = 3
So 817641-93-3 is a valid CAS Registry Number.