217201-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217201-71-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,2,0 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 217201-71:
(8*2)+(7*1)+(6*7)+(5*2)+(4*0)+(3*1)+(2*7)+(1*1)=93
93 % 10 = 3
So 217201-71-3 is a valid CAS Registry Number.