1137172-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1137172-89-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,7,1,7 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1137172-89:
(9*1)+(8*1)+(7*3)+(6*7)+(5*1)+(4*7)+(3*2)+(2*8)+(1*9)=144
144 % 10 = 4
So 1137172-89-4 is a valid CAS Registry Number.