217965-28-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217965-28-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,9,6 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 217965-28:
(8*2)+(7*1)+(6*7)+(5*9)+(4*6)+(3*5)+(2*2)+(1*8)=161
161 % 10 = 1
So 217965-28-1 is a valid CAS Registry Number.