1189748-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1189748-23-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,9,7,4 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1189748-23:
(9*1)+(8*1)+(7*8)+(6*9)+(5*7)+(4*4)+(3*8)+(2*2)+(1*3)=209
209 % 10 = 9
So 1189748-23-9 is a valid CAS Registry Number.