289906-40-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 289906-40-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,9,0 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 289906-40:
(8*2)+(7*8)+(6*9)+(5*9)+(4*0)+(3*6)+(2*4)+(1*0)=197
197 % 10 = 7
So 289906-40-7 is a valid CAS Registry Number.