1009838-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1009838-89-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,0,9,8,3 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1009838-89:
(9*1)+(8*0)+(7*0)+(6*9)+(5*8)+(4*3)+(3*8)+(2*8)+(1*9)=164
164 % 10 = 4
So 1009838-89-4 is a valid CAS Registry Number.