642425-49-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642425-49-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,4,2 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 642425-49:
(8*6)+(7*4)+(6*2)+(5*4)+(4*2)+(3*5)+(2*4)+(1*9)=148
148 % 10 = 8
So 642425-49-8 is a valid CAS Registry Number.