189897-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189897-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,8,9 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 189897-23:
(8*1)+(7*8)+(6*9)+(5*8)+(4*9)+(3*7)+(2*2)+(1*3)=222
222 % 10 = 2
So 189897-23-2 is a valid CAS Registry Number.