51656-00-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 51656-00-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,6,5 and 6 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 51656-00:
(7*5)+(6*1)+(5*6)+(4*5)+(3*6)+(2*0)+(1*0)=109
109 % 10 = 9
So 51656-00-9 is a valid CAS Registry Number.