642-88-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642-88-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,4 and 2 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 642-88:
(5*6)+(4*4)+(3*2)+(2*8)+(1*8)=76
76 % 10 = 6
So 642-88-6 is a valid CAS Registry Number.