42006-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42006-77-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,0 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42006-77:
(7*4)+(6*2)+(5*0)+(4*0)+(3*6)+(2*7)+(1*7)=79
79 % 10 = 9
So 42006-77-9 is a valid CAS Registry Number.