217642-63-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217642-63-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,6,4 and 2 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 217642-63:
(8*2)+(7*1)+(6*7)+(5*6)+(4*4)+(3*2)+(2*6)+(1*3)=132
132 % 10 = 2
So 217642-63-2 is a valid CAS Registry Number.