641994-04-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 641994-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,1,9,9 and 4 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 641994-04:
(8*6)+(7*4)+(6*1)+(5*9)+(4*9)+(3*4)+(2*0)+(1*4)=179
179 % 10 = 9
So 641994-04-9 is a valid CAS Registry Number.