7680-01-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7680-01-5 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 0 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7680-01:
(6*7)+(5*6)+(4*8)+(3*0)+(2*0)+(1*1)=105
105 % 10 = 5
So 7680-01-5 is a valid CAS Registry Number.