420133-78-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 420133-78-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,0,1,3 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 420133-78:
(8*4)+(7*2)+(6*0)+(5*1)+(4*3)+(3*3)+(2*7)+(1*8)=94
94 % 10 = 4
So 420133-78-4 is a valid CAS Registry Number.