642486-84-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642486-84-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,4,8 and 6 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 642486-84:
(8*6)+(7*4)+(6*2)+(5*4)+(4*8)+(3*6)+(2*8)+(1*4)=178
178 % 10 = 8
So 642486-84-8 is a valid CAS Registry Number.