917833-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 917833-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,7,8,3 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 917833-89:
(8*9)+(7*1)+(6*7)+(5*8)+(4*3)+(3*3)+(2*8)+(1*9)=207
207 % 10 = 7
So 917833-89-7 is a valid CAS Registry Number.