421546-03-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 421546-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,1,5,4 and 6 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 421546-03:
(8*4)+(7*2)+(6*1)+(5*5)+(4*4)+(3*6)+(2*0)+(1*3)=114
114 % 10 = 4
So 421546-03-4 is a valid CAS Registry Number.