66656-01-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66656-01-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,5 and 6 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 66656-01:
(7*6)+(6*6)+(5*6)+(4*5)+(3*6)+(2*0)+(1*1)=147
147 % 10 = 7
So 66656-01-7 is a valid CAS Registry Number.