6612-51-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6612-51-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,1 and 2 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6612-51:
(6*6)+(5*6)+(4*1)+(3*2)+(2*5)+(1*1)=87
87 % 10 = 7
So 6612-51-7 is a valid CAS Registry Number.