6501-15-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6501-15-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,0 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 6501-15:
(6*6)+(5*5)+(4*0)+(3*1)+(2*1)+(1*5)=71
71 % 10 = 1
So 6501-15-1 is a valid CAS Registry Number.