7780-77-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7780-77-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,8 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7780-77:
(6*7)+(5*7)+(4*8)+(3*0)+(2*7)+(1*7)=130
130 % 10 = 0
So 7780-77-0 is a valid CAS Registry Number.