69657-84-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69657-84-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,6,5 and 7 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 69657-84:
(7*6)+(6*9)+(5*6)+(4*5)+(3*7)+(2*8)+(1*4)=187
187 % 10 = 7
So 69657-84-7 is a valid CAS Registry Number.