1189817-65-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1189817-65-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,9,8,1 and 7 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1189817-65:
(9*1)+(8*1)+(7*8)+(6*9)+(5*8)+(4*1)+(3*7)+(2*6)+(1*5)=209
209 % 10 = 9
So 1189817-65-9 is a valid CAS Registry Number.