1417421-55-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1417421-55-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,1,7,4,2 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1417421-55:
(9*1)+(8*4)+(7*1)+(6*7)+(5*4)+(4*2)+(3*1)+(2*5)+(1*5)=136
136 % 10 = 6
So 1417421-55-6 is a valid CAS Registry Number.