1029989-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1029989-18-1 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, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1029989-18:
(9*1)+(8*0)+(7*2)+(6*9)+(5*9)+(4*8)+(3*9)+(2*1)+(1*8)=191
191 % 10 = 1
So 1029989-18-1 is a valid CAS Registry Number.