657398-96-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 657398-96-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,7,3,9 and 8 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 657398-96:
(8*6)+(7*5)+(6*7)+(5*3)+(4*9)+(3*8)+(2*9)+(1*6)=224
224 % 10 = 4
So 657398-96-4 is a valid CAS Registry Number.