7688-04-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7688-04-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,8 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7688-04:
(6*7)+(5*6)+(4*8)+(3*8)+(2*0)+(1*4)=132
132 % 10 = 2
So 7688-04-2 is a valid CAS Registry Number.