4142-77-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4142-77-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,4 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4142-77:
(6*4)+(5*1)+(4*4)+(3*2)+(2*7)+(1*7)=72
72 % 10 = 2
So 4142-77-2 is a valid CAS Registry Number.