217457-63-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217457-63-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,4,5 and 7 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 217457-63:
(8*2)+(7*1)+(6*7)+(5*4)+(4*5)+(3*7)+(2*6)+(1*3)=141
141 % 10 = 1
So 217457-63-1 is a valid CAS Registry Number.