66553-34-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66553-34-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,5,5 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 66553-34:
(7*6)+(6*6)+(5*5)+(4*5)+(3*3)+(2*3)+(1*4)=142
142 % 10 = 2
So 66553-34-2 is a valid CAS Registry Number.