634593-64-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 634593-64-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,4,5,9 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 634593-64:
(8*6)+(7*3)+(6*4)+(5*5)+(4*9)+(3*3)+(2*6)+(1*4)=179
179 % 10 = 9
So 634593-64-9 is a valid CAS Registry Number.