1284210-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1284210-55-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,4,2,1 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1284210-55:
(9*1)+(8*2)+(7*8)+(6*4)+(5*2)+(4*1)+(3*0)+(2*5)+(1*5)=134
134 % 10 = 4
So 1284210-55-4 is a valid CAS Registry Number.