421551-02-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 421551-02-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,1,5,5 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 421551-02:
(8*4)+(7*2)+(6*1)+(5*5)+(4*5)+(3*1)+(2*0)+(1*2)=102
102 % 10 = 2
So 421551-02-2 is a valid CAS Registry Number.