7699-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7699-23-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,9 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7699-23:
(6*7)+(5*6)+(4*9)+(3*9)+(2*2)+(1*3)=142
142 % 10 = 2
So 7699-23-2 is a valid CAS Registry Number.