1161742-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1161742-89-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,1,7,4 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1161742-89:
(9*1)+(8*1)+(7*6)+(6*1)+(5*7)+(4*4)+(3*2)+(2*8)+(1*9)=147
147 % 10 = 7
So 1161742-89-7 is a valid CAS Registry Number.