642425-80-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642425-80-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,4,2 and 5 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 642425-80:
(8*6)+(7*4)+(6*2)+(5*4)+(4*2)+(3*5)+(2*8)+(1*0)=147
147 % 10 = 7
So 642425-80-7 is a valid CAS Registry Number.