321172-12-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 321172-12-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,1,1,7 and 2 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 321172-12:
(8*3)+(7*2)+(6*1)+(5*1)+(4*7)+(3*2)+(2*1)+(1*2)=87
87 % 10 = 7
So 321172-12-7 is a valid CAS Registry Number.