21147-93-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21147-93-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,4 and 7 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21147-93:
(7*2)+(6*1)+(5*1)+(4*4)+(3*7)+(2*9)+(1*3)=83
83 % 10 = 3
So 21147-93-3 is a valid CAS Registry Number.