2650-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2650-71-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,5 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2650-71:
(6*2)+(5*6)+(4*5)+(3*0)+(2*7)+(1*1)=77
77 % 10 = 7
So 2650-71-7 is a valid CAS Registry Number.