321571-41-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 321571-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,1,5,7 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 321571-41:
(8*3)+(7*2)+(6*1)+(5*5)+(4*7)+(3*1)+(2*4)+(1*1)=109
109 % 10 = 9
So 321571-41-9 is a valid CAS Registry Number.