1289203-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1289203-63-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,9,2,0 and 3 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1289203-63:
(9*1)+(8*2)+(7*8)+(6*9)+(5*2)+(4*0)+(3*3)+(2*6)+(1*3)=169
169 % 10 = 9
So 1289203-63-9 is a valid CAS Registry Number.