55644-67-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55644-67-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,4 and 4 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 55644-67:
(7*5)+(6*5)+(5*6)+(4*4)+(3*4)+(2*6)+(1*7)=142
142 % 10 = 2
So 55644-67-2 is a valid CAS Registry Number.