23217-55-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23217-55-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,2,1 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 23217-55:
(7*2)+(6*3)+(5*2)+(4*1)+(3*7)+(2*5)+(1*5)=82
82 % 10 = 2
So 23217-55-2 is a valid CAS Registry Number.