7765-68-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7765-68-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,6 and 5 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7765-68:
(6*7)+(5*7)+(4*6)+(3*5)+(2*6)+(1*8)=136
136 % 10 = 6
So 7765-68-6 is a valid CAS Registry Number.