721385-55-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721385-55-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,3,8 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 721385-55:
(8*7)+(7*2)+(6*1)+(5*3)+(4*8)+(3*5)+(2*5)+(1*5)=153
153 % 10 = 3
So 721385-55-3 is a valid CAS Registry Number.