642441-06-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642441-06-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,4,4 and 1 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 642441-06:
(8*6)+(7*4)+(6*2)+(5*4)+(4*4)+(3*1)+(2*0)+(1*6)=133
133 % 10 = 3
So 642441-06-3 is a valid CAS Registry Number.