1029989-57-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1029989-57-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,9,9,8 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1029989-57:
(9*1)+(8*0)+(7*2)+(6*9)+(5*9)+(4*8)+(3*9)+(2*5)+(1*7)=198
198 % 10 = 8
So 1029989-57-8 is a valid CAS Registry Number.