1191097-98-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1191097-98-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,1,0,9 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1191097-98:
(9*1)+(8*1)+(7*9)+(6*1)+(5*0)+(4*9)+(3*7)+(2*9)+(1*8)=169
169 % 10 = 9
So 1191097-98-9 is a valid CAS Registry Number.