697258-18-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 697258-18-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,7,2,5 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 697258-18:
(8*6)+(7*9)+(6*7)+(5*2)+(4*5)+(3*8)+(2*1)+(1*8)=217
217 % 10 = 7
So 697258-18-7 is a valid CAS Registry Number.