42142-07-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42142-07-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,4 and 2 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42142-07:
(7*4)+(6*2)+(5*1)+(4*4)+(3*2)+(2*0)+(1*7)=74
74 % 10 = 4
So 42142-07-4 is a valid CAS Registry Number.