442640-76-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 442640-76-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,2,6,4 and 0 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 442640-76:
(8*4)+(7*4)+(6*2)+(5*6)+(4*4)+(3*0)+(2*7)+(1*6)=138
138 % 10 = 8
So 442640-76-8 is a valid CAS Registry Number.