7706-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7706-62-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,0 and 6 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 7706-62:
(6*7)+(5*7)+(4*0)+(3*6)+(2*6)+(1*2)=109
109 % 10 = 9
So 7706-62-9 is a valid CAS Registry Number.